Ronstan Series 15 BB Block, Single Cheek, Single fastener mount Lewmar Standard Portlight Clip Screens Sheave Ø - 55 mm

Sheave Ø - 55 mm

Alloy cheek plates

4 X M8 (5/16”) Holes

Spinlock Headsail Luff Feeder

Longer Sling (2″ longer than standard)

Ronstan Series 15 BB Block, Single Cheek, Single fastener mount Lewmar Standard Portlight Clip Screens Sheave Ø - 55 mmProduct Description Ronstan Series 15 BB Block, Single Cheek, Single fastener mount Features Smallest and lightest ball bearing block available Precision moulded acetal sheave running on stainless steel ball bearings provide high performance & low friction Single loop head blocks include an O ring to separate running line from head lashing or fixing Specifications Sheave 5 8 in. Max. Rope 3 16 in. M. W. L. 260 lb. B. L. 794 lb. Weight 0. 3 oz.