These 2 degree wedges are designed to give extra positive or negative trim. The wedges are used as an aid for boats with an insufficient transom angle or for boats having planing problems at low speed. Our unique design of the CMC Transom Wedges allows you to also use them as set back spacers, by simply inverting 2, 4, and 6 sets. Hole design fits the same pattern as the Power-Lift transom bracket and standard motoring mounting.