Barton Size 1 Ball Bearing Block Back To Back Swivel N11280

A strong, lightweight block ideal for use on dinghies and dayboats or as lead blocks on larger craft. Sheave size: 30mm x 12mm (1 3/16 x 15/32")Max rope diameter: 8mm (5/16") SWL: 350kg (771lbs)Break load: 700Kg (1543 lbs) Length: 118mmWeight: 78g