Product: Tungsten Carbide Powerful Drill BitsMaterial: Tungsten CarbideType: Imperial,Website:http://www.chinabettool.com, Metric, Non-standardProduct Description:Tungsten carbide powerful drill bits are designed to finish large feed cutting, it is small spiral angle.Special coating will improve using result, and good material is needed.We can accept standard and non-standard order.It is suitable to process carbon steel, hardened steel, alloy steel and so on.We will finish quality inspection before shipment, we have professional inspection staffs, and they will ensure product quality is stable. When we process the drill bits, we will inspect the drill bits every processing step, and when we finish the product, the final inspection will be done.