Bennett TPA189 18" x 9" Trim Plane AssemblyBennett trim planes are made of high quality 304 stainless steel and remain strong and rigid, even in the most challenging situations. Each trim plane assembly includes a trim plane, backing plate and hinge for one side of the boat.Trim Tab Plane Features: Standard Trim Assembly; 18" Wide by 9" Deep; 304 Stainless Steel; Bennett Part#: TPA189; Yamaha Part#: 6BT500697000;