Grewin-High Performance Cutting 3D Carbide Drill Tungsten Carbide Steel Shank Coated Drill Bits with External Coolant for Stainless Steel Metal
Grewin-High Quality Solid Carbide Twist Drill with Internal Cooling Water Hole for CNC Machine Tools Drilling
Custom Carbide Drill Cemented Carbide Twist Drill for CNC Machine Tools Micro Drill Bit