Blocks by Range

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: 43 g / 1.5 oz Maximum line: 6 mm /...

29mm Double Bullet Block from Harken. 29mm Triple Block Made by Harken

22mm Micro Fiddle Block w/ Jam from Harken. 22mm Fiddle block with Jam Made by Harken

29mm Carbo Triple Block w/ Cleat from Harken. 29mm Triple block configuration with cleat Made by Harken

22mm Micro Cheek Block from Harken. 22mm Mount a deck or similar Made by Harken

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...

38mm Big Bullet Block from Harken. 38mm Single Block Made by Harken

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: 102 mm / 4 in Weight: 57 g / 2 oz Shackle pin: 5 mm / 3/16 in...

The Ronstan 15 mm Utility Block range offers small boat sailors a lightweight, stainless steel block range for a variety of applications such as control lines and shockcord tension systems. This single block features a swivel head with removable shackle...

The Ronstan 15 mm Utility Block range offers small boat sailors a lightweight, stainless steel block range for a variety of applications such as control lines and shockcord tension systems. This is the basic loop head type single block, great for lashing...

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. This single loop head block includes an O-ring to separate...

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. 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. This...

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. ...

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...

Harken soft-attach Fly blocks are designed to provide strength without mass, providing sailors with big power in a low-aero package. Designed specifically for high-tech line, these efficient blocks have an incredible working load for their small size...