- stone drill bit
- 2017-01-15 03:01
- Our stone drilling bits are used for drilling all kinds of stones, refractory materials, etc.
- 11/4UNC female thread Diamond core drill bit with 450mm length
- 2017-01-15 03:01
- 1,High quality segments of the diamond core drill bit 2,High quality steel of bit body3,Specifications are upon request