China Forged Steel Percussion Impacting Down The Hole Drill Bit, Find details about China DTH Drill Bits, Mining Drill Bits from Forged Steel Percussion Impacting Down The Hole Drill Bit
head shape | head diameter/mm | shank length /mm | spline | weight/kg |
double huage button concave face | 450 | 405 | 12 | 291.5 |
double huage button concave face | 500 | 405 | 12 | 340 |
double huage button concave face | 550 | 405 | 12 | 397 |
double huage button concave face | 600 | 405 | 12 | 469 |