6pcs/set Combined Countersink Bits Center Drill HSS Metal Drilling Power Tools Description: 100% brand new and high quality. The kit contains 6 center drills (1 / 1.5 / 2 / 2.5 / 3/5 mm). Each drill bit has a double head and is ground at a standard angle of 60 degrees. Center drills and point drills have traditionally been used to make tapered holes for the center of the lathe to provide a starting point for standard twist drills. Used to maintain the manufacturing center in the parts or work pieces that need to be machined between centers. Specification: Material: high speed steel Color: as shown Quantity: 6 Pcs / Set (1 / 1.5 / 2 / 2.5 / 3 / 5mm) Package Contents 6 Pcs HSS center drills