Harken Aluminium Mastbase Block, 102mm Low-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase Part...

Harken Aluminium Mastbase Block, 57mm Low-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase. Part Number Height Length Sheave...

Harken Aluminium Mastbase Block - 76mm Low-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase.

Harken Aluminium Element Mastbase Block - Swivel Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very...

Harken Crossover Block, 44mm Crossover blocks provide a cleaner, more efficient deck. These easy-to-install blocks mount behind the stopper bank on each side of the cabin house and can route any...

Low-profile Dinghy blocks are compact and lightweight, with fast trim and release under high or low loads. Blocks are designed for dinghies and for light-duty control lines on larger boats. Note: DO...

Master Mastbase Blocks are one piece CNC machined Black Hardkote-anodised aluminum alloy cheek to provide excellent strength and lightweight. Ball bearing system has Self-Lubricant Acetal ball...

Harken 100mm Aluminum Loop Block Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail...

Harken 3T Aluminum V™ Block The V block delivers another breakthrough in Harken’s loop block series for Grand-Prix racers. Harken engineers have simplified the mechanics by combining the axial and...