WORKS FOR WOOD COMBINED WITH 6 Pcs HSS CARBON STEEL AW405126 pcs of high quality shaped cutters for wood, with the addition of carbide. The cutters are very durable, provide effective drilling even in very hard wood. Unbeatable in its price.The cutters have 8mm shank.In wooden caseIn set:Ball-bearing rounding cutterGrooving cutter2 grooving cutterProfessional ball-bearing cutterSerrated cutter.