Kit contains (14) cutters, 1" D.O.C. - 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1, 1-1/16, 1-1/8, 1-1/4 & 1-3/8" RotaLoc Plus cutters and two pilots (17810) in a sturdy plastic case (For HMD130 only)For use exclusively in the HMD130 magnetic drill. They have a bayonet style twist lock shank for fast cutter changes without using tools. For optimum cutter tool life and cutter efficiency use Slick-StikTM or RotaGelTM lubricant.