End Mill manufacturer / supplier in China, offering Drill Bits 0.2mm-3.0mm, Coated Hardened Tiny Hole Drills for Precision Metal, PCB, and Custom Parts Tungsten Carbide Drill, Diameter 0.6mm Flute Length Ratio 30xd Internal Coolant Through Micro Drill Bits Carbide CNC, Delevel CNC Carbide Extended Coolant Twist Drill Cool Tool Twist Drill Bit Tungsten Carbide Drill and so on.