Metal Drill Bit, Wood Drill Bit, Hex Shank Drill Bit manufacturer / supplier in China, offering Suborui Customized CNC Titanium 2 Flute High Speed Steel HSS M35 5% Cobalt Step Twist Drill Bit with Short Length Cutting Edge for Metal Steel, Suborui Fully Ground Quick Change Hex Shank High Speed Steel Stubby Short Length Twist Steel Drill Bit for Power Drill, Suborui Three-Flats Shank Titanium Parabolic Flute Heavy Duty HSS Pilot Point Tip Drill Bits for Metal Stainless Steel Drilling and so on.