This is our patent product HSS 3-flutes Cobalt drill which has many advantages (compare to HSS Cobalt drill bits 2-flutes): 1. Cutting speed is faster 30% 2. Cutting life is extended at least 50% longer 3. Location precision is better 4. The hole is very smooth 5. Positioning of cutting is easier

We're professional HSS 3-fultes Cobalt drill manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to buy high-grade HSS 3-fultes Cobalt drill at competitive price from our factory.