Boom Outer End To Fit 2628/2633/2632/Olympus

Boom outboard end assembly including the sheaves and fixings
For Selden sections 2628, 2633, 2632 and Olympus

Typically used on 420, 470, 505, Albacore, Bosun, Comet Race, Contender, Devon Yawl, Enterprise, Fireball, Flying Dutchman, Flying Fifteen, Flying Junior, GP 14, Graduate, Javelin, Lark, Osprey, Pirat, Snipe, Scorpion, Streaker, Vaurien, Wanderer, Wayfarer.  

Measuring the widest/central part that fits inside the boom 62.5mm
Width at the top/narrow part that fits inside the boom 50mm