Hole Saws, HSS Drill Bits, Diamond Saw Blades manufacturer / supplier in China, offering 29PC X-Step Point HSS-G Drill Bit Set Black Gold (1/16"-1/2"), Type N-Spiral Hex Shank HSS Twist Drill Bit, 19PC X-Step Point HSS-G Bright DIN 338 Drill Bit Set (1.0-10.0mm) and so on.