HIGH DURABILITY: Because the twist drill for wood is made of HSS M2, it ensures a long service life both when working in softwood and in particularly hard woods, such as Bangkirai. WITH COUNTERSINK: The countersink of the hardwood drill allows pre-drilling and countersinking of the drill hole in one operation so that the screw heads are flush with the surface. ADJUSTABLE DEPTH STOP: The ball-bearing depth stop of the wood drill enables an even drilling depth and adjusts the countersinking depth steplessly to the screws without damaging the surface of the workpiece or drilling through it. 1/4" HEXAGONAL SHANK: The 1/4" hexagonal shank of the wood twist drill according to ISO 1173, makes it compatible with all cordless screwdrivers, drills and bit holders with a 1/4" hexagonal socket.