Heavy Duty Anchor RollerThis anchor roller is in great condition. Heavy duty stainless steel. The roller is 20 1 4" total length. It is 8 7 8" at the tallest height. The sheave is 5" diameter and has a 3 1 2" inside diameter width for chain line. The outside diameter width is 4". The width including the mounting plate is 8:. The plate that has the 8 bolt holes is 8 1 2" long x 4" wide (this is that plate only). The 8 bolt holes are 2 1 4" apart and take a 3 8" bolt.