Known as a base angle, oval polywedge, or shim, this converts 90° deck hinges to angle hinges. It allows Quick Release Bimini Hinges to be mounted at a 10° angle. This marine polywedge fits between the deck hinge and the deck. To install, place it below the bimini hinge and secure it with two #10 screws (not included). Made from black nylon, the 10° marine shim resists corrosion and UV damage. Use two shims for a 20° angle. For use with hinges 401 (#284108) and 415 (#284102).