Shim kit for ratchet mounts - heavy duty rubber. Kit of four shims, two each with front/back and side/side slope. Each shim adds a half-notch (5?) tilt. Stack them for extra height or for compound angles. Shim kit for ratchet mounts - heavy duty rubber. Kit of four shims, two each with front/back and side/side slope. Each shim adds a half-notch (5?) tilt. Stack them for extra height or for compound angles.