Blocks by Range

The high-strength composite T2™ is the first block with no metal shackles or rivets. It is used for traveler controls, mainsheets and vangs, cascades, bridles, and other systems where small, lightweight blocks are called for. The T2 can be tied,...

40mm double block with swivel and becket from the Ronstan All Purpose (AP) blocks range, a great all around solution for a variety of rigging applications. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally...

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. Stainless Steel construction Sheave: 16 mm / 5/8...

The Ronstan 20mm 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...

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: 57 g / 2 oz Maximum line: 6 mm / 1/4 in...

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

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:...

Designed to work well as a primary lead block on dinghies and catamarans or for control lines on larger yachts, the Ronstan 30 mm ball bearing block range features sheaves running on Acetal ball bearings for high performance and low friction. The 2-stage...

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: 38 mm / 1 1/2 in Weight: 28 g / 1 oz Maximum line: 6 mm / 1/4...

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: 67 mm / 2 5/8 in Weight: 28 g / 1 oz Maximum line: 6 mm / 1/4...