Helix drill bit,solide carbide drill 1)Cutting tool,metal material 2)Material:HSS ,solide carbide 3)Finish:titanium coated Helix dril bit, carbide drill, solide carbide drill, carbide drill bit, 1) Our factory specialize in manufacturing all types of cutting & milling tools: Carbide End Mill, Ball & Nose End Mill, Corner Radius End Mill, Roughing End Mill, Drill Bits, Twist Drill, Center Drill, ...