Blocks with Cleats

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic line, these small, compact blocks have very high working loads for safe, easy trimming. The 40 mm fiddle is an excellent...

Ronstan All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life,...

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: 57 mm / 2 1/4 in...

Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats of all sizes. Sheave: 22 mm / 7/8 in Length: 64 mm / 2 1/2 in Weight: 99 g / 3.5 oz Maximum line: 6 mm /...

Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats of all sizes. Sheave: 22 mm / 7/8 in Length: 51 mm / 2 in Weight: 99 g / 3.5 oz Maximum line: 6 mm / 1/4 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: 57 mm / 2 1/4...

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: 57 mm/ 2 1/4 in...

Harken Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. This is a triple block with cam cleat configuration, ideal for multi purchase mainsheet systems. A great option for Hobie 16...

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Sheave: 57 mm / 2 1/4 in Length: 103 mm / 4 1/16 in Weight: 247 g / 8.7 oz Shackle pin: 5 mm / 3/16 in Maximum line: 10 mm / 3/8 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: 57 mm / 2 1/4 in...

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Sheave: 2 1/4 in Length: 5 5/8 in Weight: 10.7 oz Shackle pin: 3/16 in Maximum line: 3/8 in Maximum working load: 792 lb Breaking load:...

40mm ball bearing block from Ronstan in fiddle block configuration with an included cam cleat. This 40mm range features sheaves running on Acetal bearings that provide high performance & low friction. The 2-stage ball bearing system provides...