The hardness of the bit is HRC 5, which can drill the hardest rock quickly.
Quartzite, chert ,taconite and banded iron are the right rocks for this bit.
DIAMOND CORE DRILL BIT (INTERNATIONAL STANDARD)
Bit type | Description | Set type of Diamond | Remarks |
Wire-line |
dia. 56, 59, 75 and 95, BQ, NQ, HQ |
Impregnated | |
Couple tube | dia.56, 59, 75, 76, 91, 110, 130 and 150 | Impregnated | |
Single tube | dia.46,56, 59,75, 91, 110, 130, 150, 171, 223 and 300 | Impregnated |