Drill Bit, Saw Blade, Milling Cutter manufacturer / supplier in China, offering 6-40*230mm Length Wood Auger Twist Drill Bit with Hex Shank for Woodworking Deep Hole Drilling, 6-40mm Woodworking Auger Drill Bit with Hex Shank for Wood Deep Hole Opener, SDS Plus / Hex Shank Woodworking Auger Drill Bit 6-40mm for Wood Deep Hole Drilling and so on.