Q13-89-T51 Button Retrac Uniface Bit

Rock drilling tools factory ProDrill manufactures high quality rock drill bits, one of the most important size for benching and long-hole drilling underground is T51 Threaded Button Bit

Diameter: 76mm, 89mm, 102mm

Skirt body: retrac, and normal, 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 drilling tools.
T51 Uniface Retrac Threaded Button Bit

13 Semi-ballistic carbide inserts T51 threaded drill bit with uniface face design, 89 mm diameter match with extension drill steels. Uniface bits are well suited for drilling straighter holes in less abrasive and less consolidated rock at a faster rate.

T51-89-13button ，retrac uniface bit, 13mm*13