China Wood Drill Bits Factory Countersink HSS Shank Twist Extractor Center Drill Bit, Find details about China Drill, Drill Bit from Wood Drill Bits Factory Countersink HSS Shank Twist Extractor Center Drill Bit
HSS STEP DRILLS WITH 3 CUTTING EDGES |
1, PROCESS:MILLED ROLLED,FULLY-GROUND |
2,MATERIALS:HSS OR HSS-COBALT |
3,APPLICATION MATERIAL:STEEL,CASTIRON OR OTHER SOFT METAL |
4,SURFACE TREATMENT:WHITE,BLACK,TIN-COATED |
5,SIZE:0.2-30.0mm |
stub drill:DIN1897 |
normal drill:DIN338 |
long drill:DIN340,longer drill:DIN1869 |