EX1340	Hook-in block, as used on SILVER mast, with plain bearing Aluminum sheave. Round, fiberglass filled nylon case.
EX1351	Ball bearing hook-in block as used on BLACKGOLD Stainless steel ball bearing 16 mm sheave. Smallest, strongest and lightest hook-in block on the market.
EX1351H	HARKEN Ball bearing hook-in block as used on Blackgold racing masts. Due to the curved saddle the block rests against the mast in a fixed position which prevents mast wear and creates a halyard system with less friction