Quality HI tensile stainless steel outboard transom bolts from USA. Many applications and as used by marine dealers and outboard fit up specialists. These are ideal for 200 Hp plus applications and are pre-drilled for maximum strength on the inside of the transom. They are 300 millimeters long 90 millimeters wide and 15 millimeters thick billet Aluminium. Comes with HT motor bolts 1/2 inch unc 90 millimeter long.