8 Inch / 9 Inch / 10 Inch / 12 Inch Hardened Drill Bits for Shank M80 Hammer In DTH drilling, the rock drilling bit is a continuation of the shank, which the rock drill piston strikes directly. Since ...View More
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8 Inch / 9 Inch / 10 Inch / 12 Inch Hardened Drill Bits for Shank M80 Hammer