T Slot Cutters Inch sizes 1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1" T slot cutter for cutting T Slots in machine tables Used for opening out top and bottom of milled slot to form a T shaped slot side and face cutting Right hand milling cutter with threaded shank HSS British-made Plain flatted shank also made