Blocks

The patented T2 Ratchamatic is Harken’s newest block to feature the T2 line’s styling and soft-attachment system. The weight of this high-strength block is only a few ounces. This is thanks to composite fiber-reinforced sideplates,...

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.

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. Sheave 16 mm / 5/8 in Length: 54 mm / 2 1/8...

Single thru deck block from Allen. These blocks offer frictionless guidance for rope and wire control lines which are required to pass through a deck. Featuring a hard-wearing acetal body shaped perfectly to house the sheave, which results in a...

A low-friction Harken 29mm Carbo AirBlocks from Harken. A lightweight, strong, reliable and affordable block. This variation comes with a removable bolt through the middle so it can be undone and connected to various locations on your boat...

Block, 16mm, Triple LP Part # 91203

Block, 30mm Cheek

The Selden Ball Bearing Block, BBB30, is used when loads are moderate and dynamic. The ball bearings provide low friction sheave rotation with less vibration. This style Ball Bearing Block from Selden is available in 20, 30, 40, and 60 mm sheave...

Selden Ball Bearing Blocks (BBB) are to designed give you great bearing strength under moderate and dynamic loads where good sheave rotation and minimal friction are desired.The lightweight 30mm series features stainless steel ball bearings with...

Block, 30mm Standing Swivel

The Selden Ball Bearing Block, BBB30, is used when loads are moderate and dynamic. The ball bearings provide low friction sheave rotation with less vibration. This style Ball Bearing Block from Selden is available in 20, 30, 40, and 60 mm sheave...

30mm Single Dynamic Block from Allen.  Part # A2030 The Allen Dynamic range is generally the best choice for applications that require constant sheave movement. Bearings – Dynamic Blocks feature our patented bearing system which uses...