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| Product name | Diamond dry core drill bit |
| Brand | Johnsontools or OEM |
| Types | Diamond Dry Granite Core drill bit |
| Diameter | 32mm |
| Length | 102mm |
| Thread | 5/8-11" , M14 |
| Machine | Drilling machine |
| Application | Drilling stones, concrete brick wall |
| Quality Control | 1. Strict Raw material inspection 2. Professional formula 3. Production process control(PDCA+7S Principle) 4. Do some cutting testing to sure the using function 5. Products pass ISO9001 and SGS inspection |