HARKEN 75mm Aluminum Stand-Up Block, HBB297 Type_Headsail Furler and configuration

and configuration

Schaefer welded

This 19mm double rivet head block is ideal in a wide range of systems that provide a 4:1 or better purchase

Carbo AirBlocks® are 60% stronger and 30% lighter than Harken's classic series

This 29mm cheek block with a curved base is ideal for mast-mounted turning blocks

HARKEN 75mm Aluminum Stand-Up Block, HBB297 Type_Headsail Furler and configurationBlack Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. Black Magic blocks are easy to clean and service. They have few parts and no loose balls or rollers to misplace. Unlike blocks that are riveted, fasteners allow quick disassembly with a single hex wrench.