Rock drilling tools factory ProDrill manufactures top hammer bits: T45 Threaded Button Bit is the most important size for benching and long-hole drilling underground
Diameter: 76mm, 89mm, 102mm
Skirt body: retrac, normal, and straightrac
Face type: flat, uniface, drop center
Carbide shape: Dome, ballistic, semi-ballistic
Used in bench drilling, underground long hole drilling to match extension MF rod, MM rod heavy duty top hammer.
10 Dome Buttons, Flat face design, 3 air holes T45 Threaded Drill Bit with normal skirt body, 76mm drilling diameter.
Sandvik Top hammer drill rig RANGER DX700 using ProDrill drill bits , showing perfect drilling performance of higher penetration rate , longer life, lower cost.