20mm Dynamic Swivel Block
Allen
Article number :  A2020SC
20mm Single With Swivel Head Dynamic Block.
The A2020 is our small size, low friction, fast rolling pulley. Light and strong, it is ideal for dinghies, windsurfing, kitesurfing and anything that uses small diameter lines.
Our Dynamic range is generally the best choice for applications that require constant pulley movement.
Swivel Head - A built-in swivel axle allows this pulley to swivel when attached. It is ideal for applications where traction forces can change direction. The pivot cannot be blocked.
Bearings - Dynamic Blocks feature our patented bearing system which uses two rows of stainless steel ball bearings running on a stainless steel rail. This system offers greater load capacity and longevity than other bearing systems that operate on a plastic rail.
Becket - Our 20 and 30mm blocks feature a large central rivet which not only reduces overall weight but also provides rope friendly attachment, perfect as an attachment point when used in a cascade system .