Features: 1High Durability: This countersunk bit set is made of steel with a hardness of HRC 6264; it provides excellent cutting ability, high durability and good wear resistance. 2True 82 Degree Angle: These countersunk heads are designed to match the most common woodworking 82 degree screws you are likely to encounter. 3Self Cleaning: The drill is precisely mounted in the sink housing and the two chamfering grooves enable faster maneuvering and self cleaning of the drill to create perfectly sized and shaped holes. 42 In 1 Design For Woodworking: Turn a two step dip into a one step operation. This creates perfect countersunk holes for flathead and push in screws that won't split wood, and enjoy neat projects with a drill bit set. 5Versatile Use: Comes with 5 interchangeable bits to cover all sizes of screws. The countersunk drill bits are suitable for bench drills, hand drills and conventional electric drills. They are perfect for wood, fiberboard, particleboard, plywood, plastics, PVC, rubber and more. Specification: Item Type: Drill Bits SetMaterial: Steel Weight: Approx. 90g / 3.2ozUse: Drill Package List: 5 x Drill Bits5 x Replacement Drill Bit1 x Hex Wrench