China 6 Inch Water Well Quarry DTH Rock Mining Drilling Bits, Find details about China Drill Bit, Drill Bit Set from 6 Inch Water Well Quarry DTH Rock Mining Drilling Bits
head shape | head diameter/mm | shank length /mm | spline | weight/kg |
concave face | 154 | 231 | 12 | 21.6 |
flat face | 165 | 231 | 12 | 21.8 |
concave face | 171 | 231 | 12 | 23.3 |
concave face | 178 | 231 | 12 | 24.3 |
concave face | 190 | 231 | 12 | 25.5 |
concave face | 203 | 231 | 12 | 28.7 |