Blocks

Size-for-size in our expanding range, Harken Zircon blocks are the most efficient small boat blocks Harken has ever made. At the core of Zircon performance are industrial ceramic ball bearings mounted inside caged races. The cages keep these bearings...

Size-for-size in our expanding range, Harken Zircon blocks are the most efficient small boat blocks Harken has ever made. At the core of Zircon performance are industrial ceramic ball bearings mounted inside caged races. The cages keep these bearings...

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...

The 384 traveler block features high-load composite bearings to handle wire and high-strength line. Use with the 382 Radial Traveler car and other Small Boat cars to configure a radial vang. Do not use as mainsheet traveler. ONE DESIGN...

Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes Sheave: 1 1/2 in Weight: 3 oz Shackle pin: 1/4 in Maximum wire: 3 mm Maximum line: 3/16 in Maximum working load: 1500 lb Breaking load: 3000...

Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes. Sheave: 1 in Weight: 1.25 oz Shackle pin: 3/16 in Maximum wire: 2 mm Maximum line: 5/32 in Maximum working load: 1000 lb Breaking load: 2000...

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,...

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,...

40mm triple 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...

40mm triple block with swivel 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 well with...

40mm double block with swivel 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 well with...

40mm single stand up block 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 well with...

40mm single block with loop top 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 well with...

40mm ball bearing block from Ronstan in triple block with becket and swivel head configuration. This 40mm range features sheaves running on Acetal bearings that provide high performance & low friction. The 2-stage ball bearing system provides...

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

40mm ball bearing block from Ronstan in double block with becket and swivel head configuration. This 40mm range features sheaves running on Acetal bearings that provide high performance & low friction. The 2-stage ball bearing system provides...