30mm Single Dynamic Block With Fiddle And Cleat. Our Dynamic range is generally the best choice for applications that require constant sheave movement.This block is great for lightweight vang systems. A.677 Cam Cleat – This block features an allenite cam cleat with over fairlead. Click here for cleat details.Swivel Head – A built-in swivel pin allows this block to swivel once attached. ideal for applications where the pulling forces may change direction. The swivel cannot be locked.Bearings – Dynamic Blocks feature our patented bearing system which uses twin rows of stainless-steel ball bearings running on a stainless-steel rail. This provides a superior load-carrying ability and longevity when compared to other bearing systems which run on a plastic rail.Fiddle - The fiddle is a secondary smaller sheave which can be used to create an inline purchase system for a smaller lower loaded application. The fiddle features ball bearings. Becket - This block also features a removable clevis pin, for easy attachment or release of a spliced rope. It also allows this block to create a 4:1 purchase system.
