CMT 823.001.11 Slot Cutter Set in Carrying Case, 8mm bore, Carbide-Tipped Includes 8 three-wing slot cutters, 4 slot cutter arbors, 4 bearings and a hey key For making slots, grooves and rabbets in all materials Ideal for biscuit joints and milling perfect tongue and groove joints 4 bearings included to allow for a depth of cut of 5/16-Inch, 3/8-Inch, 1/2-Inch and 9/16-Inch Carbide-tipped slot cutter featuring 3 wings, right-hand rotation, anti-kickback design