Cheek Blocks

This is the smallest and lightest Ronstan ball bearing block available. A Precision moulded acetal sheave running on stainless steel ball bearings provide high performance & low friction. Features lateral supports for improved mounting stability...

The Ronstan 30mm Orbit block is small and compact. Used on high performance boats, these blocks are used by the best and perform for the best. Made from advanced fiber and polymer technology, these blocks are ten times stronger than steel, yet more...

Ronstan's ball bearing blocks were conceived and engineered for the demands of competitive sailing in all types of boats and have rapidly become the international choice for high performance hardware. Highly efficient, low friction bearing systems for...

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Sheave: 40 mm / 1 9/16 in...

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Sheave: 29 mm / 1 1/8...

The 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race and has a 250 lb (113 kg) maximum working load...

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 styles lets these blocks adapt to almost all control line applications. Sheave: 29 mm / 1 1/8 in Length:...