Utilize this 30mm Dynamic Single Fork Head Block to easily attach your SA.873 heavy-duty ILCA vang key. The block is specifically designed for use as the ILCA top vang block, while featuring a removable clevis pin for convenient attachment. This block also features our patented bearing system with twin rows of stainless-steel ball bearings on a stainless-steel rail, providing exceptional load-carrying capacity and durability compared to other bearing systems on plastic rails. Additionally, the large central rivet on our 20 & 30mm blocks reduces weight and offers a rope-friendly attachment for use in a cascade system.