Strut for 45" (1150mm) and larger catamaran. Aluminum, CNC cut. Includes: Everything in picture 1 Requires a catamaran with transom overhang. Measure approx. Strut 140mm (5.51") in length. Transom mounting plate 45mm tall x 27mm wide. Transom overhang mounting plate size 30mm by 30mm. Lead teflon bushing for 1/4" (.250", 6.35mm) propeller shaft.