Berges® Spring tension Pulley type F210b for use with wide belts type CW-b 37 and adjusting pulley R210b. Diameter of 220mm with length through bore 122mm, die cast aluminum sheave faces with steel slide hub. Identified by casting numbers 11000329 and 11000331 one spring; castings used on other series of pulleys.. Maximum shaft diameter 38mm with standard bores listed for sale, alternative bores are available contact TVT for non-standard bore quotation.