Blocks

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

Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes. Sheave Ø (mm) 38 mm Sheave Ø (in...

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

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

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

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

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

Harken® gross-trim/fine-tune mainsheet systems are easy to install and use. These optimized systems decrease overall line clutter because they use ...

Harken® gross-trim/fine-tune mainsheet systems are easy to install and use. These optimized systems decrease overall line clutter because they use ...

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

Small Boat Flip-Flop blocks pivot around the line axis to keep the line close to the deck. Hinged construction allows for various lead angles. She...

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

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...

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...

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Sheave Ø (mm) 57 mm Sheave ...

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these smal...

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken® Black Magic® line, these small, c...

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken® Black Magic® line, these small, c...

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Single carbo ratchet blocks h...

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Single carbo ratchet blocks h...

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 2608, 2609, and 2614 have on/...

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Sheave Ø (mm) 40 mm Sheav...

The patent-pending T2 Ratchamatic is Harken’s newest block to feature the T2 line’s styling and soft-attachment system. The weight of this high-st...

Use Big Boat deck organizers to lead multiple lines aft to halyard stoppers or winches. Deck organizers feature aluminum hardcoat-anodized side pla...

Deck organizers lead halyards and control lines aft, allowing crew to sail from the security of the cockpit. Deck organizers lead a large number of...

Deck organizers lead halyards and control lines aft, allowing crew to sail from the security of the cockpit. Deck organizers lead a large number of...

Deck organizers lead halyards and control lines aft, allowing crew to sail from the security of the cockpit. Deck organizers lead a large number of...

Low-profile Through Deck Dinghy blocks are compact and lightweight, with fast trim and release under high or low loads. Blocks are designed for din...

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

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

Over-the-top blocks lead lines aft over cabin houses, coamings, and splashguards. Sheave Ø (mm) 57 mm Sheave Ø (in) 2 1/4 in Length (mm) 83 mm ...

Deck organizers lead halyards and control lines aft, allowing crew to sail from the security of the cockpit. Deck organizers lead a large number of...

Ball bearing swivel bases feature dual rows of Delrin® ball bearings that swivel freely even under high loads. Bases include stand-up springs and a...

Self-contained sheaves are designed for sailors to use in custom applications. Two 160 sheaves make up the 161 dual-sheave universal lead. Use this...

Deck organizers lead halyards and control lines aft, allowing crew to sail from the security of the cockpit. Deck organizers lead a large number of...

Self-contained sheaves are designed for sailors to use in custom applications. Use Cruising ESP sheaves to handle high static loads from halyards a...

Self-contained sheaves are designed for sailors to use in custom applications. Use Cruising ESP sheaves to handle high static loads from halyards a...

Self-contained sheaves are designed for sailors to use in custom applications. Use Cruising ESP sheaves to handle high static loads from halyards a...

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

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

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

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

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

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

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

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

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

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