Rock drilling tools manufacturer ProDrill™ offers rock drill bits: EL60-127mm thread button bit are one of the most important size for benching and long hole drilling underground
EL60-127 mm Thread Button Bit
Skirt Body: normal, straightrac
Face type: flat, uniface, drop center
Uniface EL60 Threaded Drill Bit
Carbide Design: Dome, ballistic, semi-ballistic/parabolic
Used in bench drilling, underground long hole drilling to match extension drill rod, heavy duty top hammer.
15 Semi-ballistic carbide inserts EL60 threaded dill bit with flat face design, 127mm diameter with extension drill steel for bench drilling and underground long hole drilling.