Harken 57mm Aluminium 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 57mm Aluminium Double Block - Swivel, Becket Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are...

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 Mastbase Blocks - 57mm Aluminium Padeye Block Teardrop blocks are ideal as masthead leads and in other applications where limited articulation or direct attachment is desired. When attached...

Harken 57mm Aluminium Low-Load Double Block - Swivel Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are...

Harken 57mm Aluminium Block - Swivel 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 57mm Aluminium Block - Swivel, Becket Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for...

Harken Black Magic Air Blocks - 57mm Aluminium Stand-Up Block Black Magic Air blocks are a top favourite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful...

Harken 57mm Aluminium Forkhead ESP Block Cruising ESP blocks complement our existing blocks in looks and function, but are simpler in design and construction. Sheaves feature sleeve bearings to...