The A2022 double sheave low friction, fast rolling, pulley is a standout choice for dinghies, windsurfing, kitesurfing, and other activities that require smaller diameter lines. With its patented stainless-steel bearing system and unique Ultra-Strap design, the Allen 20mm Double Dynamic Block with Becket is a lightweight and strong option that ensures constant sheave movement while being rope friendly. The addition of a becket makes tying off easier and keeps the load centralized for optimal performance.