Detailed Product Description We sell High Quality Drill Bits, router wheels, hole edging tools. We manufacturing a various of high ... , such as: High Quality Diamond Drill Bit, Glass Drill Bits, Glass Drill Bit, Brass Drill Bit, Core Bits, Glass Drill Tools, Drill ... Industry. NOTE: 1- Category: Straight-Shank / Taper Shank Drill Bit, Unitary Drill BitMaterials: Either Diamond or Copper Brass.Length of ...