RONSTAN S30 mm Utility Cheek Block - Curved Base, RF285 Type_Micro They also perform a variety

They also perform a variety of control functions on many boats

The Harken 40mm Carbo Air® Single Block includes an integral becket that allows either a 2:1 or 3:1 purchase

uniform rotation in all directions and a quick

Helps organize your lines

5") and 51 mm (2") wire blocks feature sideload balls between the sheave and the side plate to minimize friction from unfair leads

RONSTAN S30 mm Utility Cheek Block - Curved Base, RF285 Type_Micro They also perform a varietyRonstan designs and manufactures world class blocks and pulleys for all types of sailing. The comprehensive range allows customers to choose sheave material, bearing style, and configuration, with sizes to suit anything from a small dinghy to a Maxi yacht. Not all control line blocks on a boat require two stage bearings that evolve from years of R&D and the expense that goes with them. Sometimes the system just needs a simple, but solid block. Utility