The A2030 is a premium low friction, quick-rolling single stand up dynamic block that is perfect for dinghies and other small line applications. Our patented bearing system, featuring twin rows of stainless-steel ball bearings on a stainless-steel rail, provides superior load-carrying capacity and durability compared to other bearing systems that use a plastic rail. This block stands up under pressure thanks to its built-in spring and lacing eye, and it also features our patented Ultra-Strap for added strength and rope-friendliness. Our 20 and 30mm blocks also have a central rivet that reduces weight and enhances performance.