Allen 30mm XHL Extreme High Load Laser Vang Block Select (See Table Below):AL 2031 XHL 873 BK 30MM XHL DYNAMIC: SING+KEY BLK EACH Material PVC Shape Description Cylinder Lewmar new upload Nov 9462 Material PVC Shape Description Cylinder Brand Anchor Marine Colour Black Width 18cm Length 60 69cm Weight 1 foot mounted with BSP threaded ports and a 24V DC electric clutch with 1B pulley the XHL block is pushing the boundaries of small block performance This block features the same extreme high load dynamic bearing technology as the rest of the Allen XHL range and has specifically been adapted to work as the ILCA dinghy’s top vang block