Barton Marine 35mm Single Swivel Block Size 2Barton Marine Size 2 Ball Bearing 35 mm Block Barton Marine Size 2 Ball Bearing 35 mm Block has a 35mm (1 3 8") sheave Barton Marine Size 2 Ball Bearing 35 mm Block Key Features : This block range size provides high performance and load values in a variety of assemblies & configurations The range has an internal stainless steel frame and precision components Also available in plain bearing sheave options The lightweight design makes this range perfect