Blocks

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...

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...

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...

Harken low-profile Flip-Flop blocks are lightweight and can be used for various leads on your boat including halyard leads, mainsheet leads and spi...

Low-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase. Sheave Ø (mm) 76 mm Sheave Ø (in) 3...

Midrange blocks robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on ...

Midrange blocks robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on ...

Midrange blocks robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on ...

Midrange Hexaratchet blocks grip loaded sheets, yet allow sailors to ease and trim quickly and with complete control. A switch on the side engages ...

Midrange Hexaratchet blocks grip loaded sheets, yet allow sailors to ease and trim quickly and with complete control. A switch on the side engages ...

Teardrop blocks are ideal as masthead leads and in other applications where limited articulation or direct attachment is desired. When attached to ...

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...

Aluminium High-load sheaves are offered as replacement parts or for use in special applications. Their bearing system combines sideload-carrying ba...

Aluminium High-load sheaves are offered as replacement parts or for use in special applications. Their bearing system combines sideload-carrying ba...

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 ...

Runners are used on running backstays of offshore boats to adjust mast bend for different wind conditions. Integrated sideplate bails and recesse...

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...

Stand-up bases allow a wide variety of blocks to be held upright, swivel freely, or pivot so lines have a fairlead under load. Use the 1634 stand-u...

Power3 ratchet blocks provide sailors that race small one-designs with three holding-power options to handle a variety of wind and sea conditions. ...

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 ...

The 1598 U-adaptor allows blocks with up to 15 mm (19/32") posts to be attached to swivel bases or to other blocks with 15 mm (19/32") posts. Fits ...

The V block delivers another breakthrough in Harken’s loop block series for Grand-Prix racers. Harken engineers have simplified the mechanics by co...

The V block delivers another breakthrough in Harken’s loop block series for Grand-Prix racers. Harken engineers have simplified the mechanics by co...

Big Boat sheaves are available for special applications as well as for replacement sheaves in Big Boat blocks. Made of hardcoat-anodized, PTFE-impr...

Compact and lightweight pulley with fixed side plates, aluminum body and ball bearing to ensure optimum efficiency.Nylon wheel.For ropes up to 11 m...

Ronstan Utility Blocks feature Stainless steel cheeks and Acetal sheaves to ensure a long service life with virtually no maintenance. Hollow rivets...

Ronstan Utility Blocks. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in the bl...

Ronstan Series 29 Utility Blocks. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. •Lightweight ...

Ronstan Series 29 Utility Blocks. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. •Lightweight ...

Ronstan Utility Blocks. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in the bl...

Ronstan Utility Block ferrule top with becket. Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. ...

Ronstan Series 55 Orbit Automatic ratchet block with dyneema link heads. Now you can enjoy the flexibility of setting up your ratchet blocks to sui...

Lightweight:Kilogram for kilogram of working load, BB and RT Orbit Blocks™ are the world’s lightest. The unique orbital design allows the bearing t...

Ronstan Series 60 Core block with swivel, becket and cam cleat. Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides...

Ronstan Series 60 Mast Base Core Block with aluminium sheave for use with wire rope. Clevis attachment allows direct attachment to mast base or hea...

Ronstan Series 60 Core Block with swivel head and aluminium sheave for use with wire. Core Blocks™ are a true all round solution. A tuned 2-stage ...

Lightweight: Kilogram for kilogram of working load, BB and RT Orbit Blocks™ are the world’s lightest. The unique orbital design allows the bearing ...

Ronstan 75mm Industrial Block single with swivel head and alloy sheave for wire rope. Ronstan Industrial Blocks are strong, versatile and cost effe...

Ronstan 40mm Auto Ratchet Block Now you can enjoy the flexibility of setting up your fitout exactly to suit yourself. Ronstan is the only company t...