Ronstan Series 15 BB Block, Single Cheek, Single fastener mount Lewmar Standard Portlight Clip Screens 4 X M8 (5/16”) Holes

4 X M8 (5/16”) Holes

Working load- 5820 Lbs

Alloy cheek plates

The roll-down closure (we recommend rolling down three times) with side release fastenings create a watertight seal

Ronstan Series 15 BB Block, Single Cheek, Single fastener mount Lewmar Standard Portlight Clip Screens 4 X M8 (5/16”) HolesProduct 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.