Hard Rock HQ Diamond Core Drill Bit For Porcelain Tile Granite 76 91 110 130 Couple Tube
Features:
1. High penetration rate and drilling effeciency.
2. Long service life;
3. Good gauge effect;
4. High cost performance;
5. Wide usable range, diamond core bits are the most commonly useful bits in the mineral exploration industry.
Specification:
Double tube surface | ||||
Size( surface exploration drill | Matric system(mm) | Imperial system( in ) | ||
Hole diameter | Core diameter | Hole diameter | Core diameter | |
BQ | 60 | 36.4 | 2.36 | 1.43 |
NQ | 75.7 | 47.6 | 2.98 | 1.88 |
HQ | 96.1 | 63.5 | 3.78 | 2.5 |
PQ | 122.7 | 85 | 4.83 | 3.34 |
Triple tube surface | ||||
NQ3 | 75.7 | 45 | 2.98 | 1.78 |
HQ3 | 96.1 | 61.1 | 3.78 | 2.41 |
PQ3 | 122.7 | 83 | 4.83 | 3.27 |