The 3372AL 20-Ton V block introduces a new breakthrough in Harken's loop block series for professional sailors. By combining axial and thrust bearings into a single set of V-shaped titanium rollers, Harken engineers have simplified the mechanics. This results in a lightweight but sturdy block, providing exceptional efficiency under heavy loads and smooth easing in light winds. The aluminum sideplates, titanium sheave, and captive titanium roller bearings make the V block durable and easy to maintain. Part No. 3372AL, the 20T Aluminum V™ Block, features a 155mm sheave diameter and can handle a maximum line diameter of 30mm and working load of 20000kg.