The Barton Size 2 Ball Bearing Block has a 35mm (1 3/8") sheave. 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 for a multitude of uses on every yacht. Suitable for up to 8mm (3/8") rope.