Product information "35mm Concealed Hinge Bit" Bore Clean, Perfect Holes for Concealed Door Hinges The 35mm Concealed Hinge Bit makes it possible to bore clean, perfect holes for concealed hinges. The bit is a direct replacement for the bit that’s included in the Kreg Concealed Hinge Jig. For clean, fast cutting, the bit features four carbide cutters—two main cutters that bore a flat-bottomed hole, and a pair of spur cutters that ensure clean hole edges free of tearout. The bit shank is sized to fit in the drill guide on the Concealed Hinge Jig, and the shank has a shoulder that perfectly positions a stop collar. Note: Stop collar not included with this bit. Sold separately with the Concealed Hinge Jig. While the Concealed Hinge Bit is designed for use with the Concealed Hinge Jig, it’s a great bit to use with any hand drill or drill press for boring precise 35mm holes. Technical Specifications For Use With Kreg Concealed Hinge Jig Any hand drill or drill press Works with 35mm cup-style hinges ConstructionDurable glass-filled nylon Includes (1) 35mm Bit (1) stop collar