HSS Drill Bit,solid carbide drill 1)Roll forged and full polish 2)Cutting tool,metal material 3)Material:HSS ,solide carbide HSS Dril Bit, carbide drill, solide carbide drill, carbide drill bit, twist drill 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, ...