Cast aluminum spacer provides 2" of setback for bolt-on motors. Made of 713 cast aluminum, dipped in a zinc rich primer then powder coated. This solid spacer installs directly on the transom or adds additional setback to an existing jack plate. Has a standard B.I.A. bolt pattern, but is drillable for non-standard patterns. Overall size: 16" Wx 13.25 H x 2"D. Support weight is 300HP and 635 lbs.