Stainless Steel Single Block - 25mm Sheave Diameter for 25mm Stanchion PivotingA single block intended for use on a dinghy. The block is light, reliable, and has good performance.Applications:For stanchion applications - furling system lineSpecifications:Materials Composite sheave and 316L stainless steel grade cheeksRope size: (inch) 5/16"-25/64" / (mm) 8-10Length: (inch) 3 47/64" / (mm) 95Width: (inch) 2 3/32" / (mm) 53Thickness: (inch) 53/64" / (mm) 21Sheave Diameter: (inch) 63/64" / (mm) 25Working load: (lb) 610 / (mm) 280Breaking load: (lb) 880 / (mm) 400Weight: (lb) 0.154 / (g) 70Caption:Working Load (WL): For nautical applicationsWorking Load Limit (WLL): For industrial applications only. The safety factor is 5 times the breaking load. WLL = Breaking load / 5*Sold as an Individual