Button Bit GT60 -127-19 parabolic bit, heavy duty

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Rock drilling tools manufacturer ProDrill offers rock drill bits: GT60 -127-19 parabolic bit are one of the most important size for benching and long hole drilling underground Button Bit GT 60 -127-19 parabolic bit, heavy duty, 13mm*10+16mm*6 tungsten carbide tips grade code T6,Button Bit GT60 -127-19 parabolic bit, heavy duty-ProDrill Button Bit GT60 -127-19 parabolic bit, heavy duty-ProDrill