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Sailing blocks. Buy online with Fosters, the home of quality sailing & yachting hardware for over 100 years. Stockists of Harken, Ronstan, Cleveco, HYE, Spinlock

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  • FLY BLOCK HARKEN 40MM SOFT ATTACH

    $276.00 - $276.00
    $276.00
    $276.00 - $276.00
    $276.00
    In stock

    Harken soft-attach Fly blocks are designed to provide strength without mass, providing sailors with big power in a low-aero package. Designed speci...

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  • FURLING STANCHION BLOCK HOMER

    FURLING STANCHION BLOCK HOMER

    $13.41 - $13.41
    $13.41
    $13.41 - $13.41
    $13.41
    In stock

    Homer nylon furling block. Fits on standard 25mm stanchions and is used to lead furling lines back to the cockpit SPECIFICATIONSLength: 95mmProtrus...

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  • HALYARD RESTRAINER 32MM SHEAVE

    $294.62 - $294.62
    $294.62
    $294.62 - $294.62
    $294.62
    In stock

    Harken Halyard restrainers prevent the halyard from wrapping around the furling foil on boats where the swivel isn’t mounted near the masthead. Sh...

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  • HARKEN 1 TON TWING BLOCK

    $663.10 - $663.10
    $663.10
    $663.10 - $663.10
    $663.10
    Low stock

    1 Ton Twing Snatch Block The new Twing block features a spring loaded side opening mechanism for true one-handed rigging, even while wearing sailin...

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  • HARKEN 100MM BLACK MAGIC SWIVEL BLOCK BKT

    $2,136.28 - $2,136.28
    $2,136.28
    $2,136.28 - $2,136.28
    $2,136.28
    In stock

    The entire line of Black Magic Air blocks has been redesigned with a sleek new look. Their unique, performance-packed engineering remains exactly t...

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  • HARKEN 100MM ESP SWIVEL BLOCK SINGLE

    $722.43 - $722.43
    $722.43
    $722.43 - $722.43
    $722.43
    In stock

    Cruising ESP blocks complement our existing blocks in looks and function, but are simpler in design and construction. Sheaves feature sleeve bearin...

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  • HARKEN 100MM HI LOAD FIXED MASTBASE BLOCK

    $1,235.30 - $1,235.30
    $1,235.30
    $1,235.30 - $1,235.30
    $1,235.30
    In stock

    Low-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase. Sheave Ø (mm) 102 mm Sheave Ø (in) 4...

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  • HARKEN 16MM CHEEK BLOCK

    $45.77 - $45.77
    $45.77
    $45.77 - $45.77
    $45.77
    In stock

    The 16 mm is Harken’s smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses...

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  • HARKEN 16MM DOUBLE AIRBLOCK

    $82.11 - $82.11
    $82.11
    $82.11 - $82.11
    $82.11
    In stock

    The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system use...

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  • HARKEN 16MM DOUBLE AIRBLOCK BECKET

    $89.95 - $89.95
    $89.95
    $89.95 - $89.95
    $89.95
    In stock

    The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system use...

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  • HARKEN 16MM FLIP FLOP BLOCK

    $104.17 - $104.17
    $104.17
    $104.17 - $104.17
    $104.17
    In stock

    The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system use...

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  • HARKEN 16MM HOOK IN HALYARD BLOCK

    $78.98 - $78.98
    $78.98
    $78.98 - $78.98
    $78.98
    In stock

    The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system use...

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  • HARKEN 16MM SINGLE AIRBLOCK

    $39.34 - $39.34
    $39.34
    $39.34 - $39.34
    $39.34
    In stock

    The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system use...

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  • HARKEN 16MM SINGLE AIRBLOCK BECKET

    $45.24 - $45.24
    $45.24
    $45.24 - $45.24
    $45.24
    In stock

    The 16 mm is Harken’s smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses...

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  • HARKEN 16MM SINGLE AIRBLOCK FORKHEAD

    $56.57 - $56.57
    $56.57
    $56.57 - $56.57
    $56.57
    In stock

    The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system use...

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  • HARKEN 16MM SINGLE AIRBLOCK SWIVEL

    $71.19 - $71.19
    $71.19
    $71.19 - $71.19
    $71.19
    In stock

    The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system use...

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  • HARKEN 16MM THRU DECK BLOCK

    $109.65 - $109.65
    $109.65
    $109.65 - $109.65
    $109.65
    In stock

    The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system use...

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  • HARKEN 16MM TRIPLE AIRBLOCK

    $116.20 - $116.20
    $116.20
    $116.20 - $116.20
    $116.20
    In stock

    The 16 mm is Harken’s smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses...

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  • HARKEN 16MM TRIPLE AIRBLOCK BECKET

    $122.27 - $122.27
    $122.27
    $122.27 - $122.27
    $122.27
    In stock

    The 16 mm is Harken’s smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses...

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  • HARKEN 18mm Fly Blocks

    $59.93 - $145.51
    $59.93 - $145.51
    $59.93 - $145.51
    $59.93
    In stock

    Harken soft-attach Fly blocks are designed to provide strength without mass, providing sailors with big power in a low-aero package. Designed speci...

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  • HARKEN 2.25 BEARING BLOCK

    $139.73 - $139.73
    $139.73
    $139.73 - $139.73
    $139.73
    In stock

    The 2.25 in (57 mm) blocks are compact and lightweight, with fast trim and release under high or low loads. Perfect for dinghies, scows, beachcats ...

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  • HARKEN 2.25 THRU DECK BLOCK

    $166.28 - $166.28
    $166.28
    $166.28 - $166.28
    $166.28
    In stock

    The 2.25 in (57 mm) blocks are compact and lightweight, with fast trim and release under high or low loads. Perfect for dinghies, scows, beachcats ...

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  • HARKEN 22M MICRO SINGLE SWIVEL BLOCK

    $66.95 - $66.95
    $66.95
    $66.95 - $66.95
    $66.95
    In stock

    Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats o...

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  • HARKEN 22MM SINGLE MICRO BLOCK

    $33.38 - $33.38
    $33.38
    $33.38 - $33.38
    $33.38
    In stock

    Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats o...

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  • HARKEN 22MM SINGLE MICRO BLOCK FORKHEAD

    $54.32 - $54.32
    $54.32
    $54.32 - $54.32
    $54.32
    In stock

    Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats o...

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  • HARKEN 25MM BLOCK WIRE FORKHEAD BECKET

    $114.07 - $114.07
    $114.07
    $114.07 - $114.07
    $114.07
    In stock

    Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes. The 466 features a forkhead and be...

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  • HARKEN 25MM SINGLE WIRE BLOCK

    $105.94 - $105.94
    $105.94
    $105.94 - $105.94
    $105.94
    In stock

    Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes. Stainless Steel side plates. Alum...

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  • HARKEN 25MM WIRE CHEEK BLOCK

    $111.89 - $111.89
    $111.89
    $111.89 - $111.89
    $111.89
    In stock

    Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes. Sheave Ø (mm) 25 mm Sheave Ø (in...

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  • HARKEN 25MM WIRE SHEAVE

    $68.48 - $68.48
    $68.48
    $68.48 - $68.48
    $68.48
    In stock

    Self-contained sheaves are designed for sailors to use in custom applications. Wire sheaves ride on high-load composite bearings. They are hardcoat...

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  • HARKEN 25MM WIRE THRU DECK BLOCK

    $133.83 - $133.83
    $133.83
    $133.83 - $133.83
    $133.83
    In stock

    Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes. Sheave Ø (mm) 25 mm Sheave Ø (in...

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  • HARKEN 29 BECKET BULLET BLOCK

    $51.79 - $51.79
    $51.79
    $51.79 - $51.79
    $51.79
    In stock

    Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...

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  • HARKEN 29 BULLET SWIVEL BECKET BLOCK

    $85.47 - $85.47
    $85.47
    $85.47 - $85.47
    $85.47
    In stock

    Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...

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  • HARKEN 29 BULLET SWIVEL BLOCK

    $76.74 - $76.74
    $76.74
    $76.74 - $76.74
    $76.74
    In stock

    Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...

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  • HARKEN 29 CHEEK BLOCK WIRE

    $69.84 - $69.84
    $69.84
    $69.84 - $69.84
    $69.84
    In stock

    Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...

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  • HARKEN 29 DOUBLE UPRIGHT LEAD BLOCK

    $114.02 - $114.02
    $114.02
    $114.02 - $114.02
    $114.02
    In stock

    Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...

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  • HARKEN 29 DOUBLE WIRE BLOCK

    $146.75 - $146.75
    $146.75
    $146.75 - $146.75
    $146.75
    In stock

    Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...

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  • HARKEN 29 EXIT BLOCK DOUBLE

    $100.39 - $100.39
    $100.39
    $100.39 - $100.39
    $100.39
    In stock

    Low-friction Through Deck Bullet blocks lead control lines through decks and spars. They are compact and lightweight, with fast trim and release u...

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  • HARKEN 29 MAST EXIT BLOCK

    $63.23 - $63.23
    $63.23
    $63.23 - $63.23
    $63.23
    In stock

    Low-friction Through Deck Bullet blocks lead control lines through decks and spars. They are compact and lightweight, with fast trim and release un...

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  • HARKEN 29 MAST EXIT BLOCK WIRE

    $78.39 - $78.39
    $78.39
    $78.39 - $78.39
    $78.39
    In stock

    Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...

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  • HARKEN 29 SINGLE BULLET BLOCK

    $43.47 - $43.47
    $43.47
    $43.47 - $43.47
    $43.47
    In stock

    Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...

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  • HARKEN 29 TRIPLE BULLET BLOCK

    $164.45 - $164.45
    $164.45
    $164.45 - $164.45
    $164.45
    In stock

    Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...

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  • HARKEN 29 UPRIGHT WIRE BLOCK

    $79.63 - $79.63
    $79.63
    $79.63 - $79.63
    $79.63
    In stock

    Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...

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  • HARKEN 29 WIRE BLOCK

    $57.92 - $57.92
    $57.92
    $57.92 - $57.92
    $57.92
    In stock

    Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...

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  • HARKEN 29MM EXIT BULLET IN LINE

    $132.48 - $132.48
    $132.48
    $132.48 - $132.48
    $132.48
    In stock

    Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of...

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  • HARKEN 29MM FLY BLOCK

    $218.50 - $218.50
    $218.50
    $218.50 - $218.50
    $218.50
    In stock

    Harken soft-attach Fly blocks are designed to provide strength without mass, providing sailors with big power in a low-aero package. Designed speci...

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  • HARKEN 29MM PIVOT CHEEK BLOCK

    $69.78 - $69.78
    $69.78
    $69.78 - $69.78
    $69.78
    In stock

    Harken 29mm pivoting bullet cheek block. Allows block to automatically align itself to the load. Low-friction Bullet blocks lead control lines aft....

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  • HARKEN 29MM PIVOT LEAD CAMCLEAT

    $181.02 - $181.02
    $181.02
    $181.02 - $181.02
    $181.02
    In stock

    High-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and as “head knockers” on dinghies and beachcats for...

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  • HARKEN 2:1 TRAVELLER CONTROL ASSEMBLY

    $1,178.73 - $1,178.73
    $1,178.73
    $1,178.73 - $1,178.73
    $1,178.73
    In stock

    Fits Harken 32mm Traveller Cars: T3204B.HL, T3224B.HL, T3234B.HL, and T3244B.HL cars. Sheave Ø (mm) 57 mm Sheave Ø (in) 2 1/4 in Length (mm) 14...

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