With 6 bearings (0.3 cm, 0.6 cm, 0.9 cm, 0.9 cm, 0.9 cm, 1.1 cm and 1.2 cm) Interchangeable bearings for cutting rabbets of different depths producing smooth cuts on both surfaces Use on portable and table-mounted routers Cuts materials of any composition, plywood, hardwoods and softwoods Solid hardened steel body with anti-kickback design