ST58-89 Retrac Button Bit

Code No.: Q14-89-ST58
Thread: ST58
Diameter: 89mm
Gauge Buttons: 14mm*8
Front Buttons: 12mm*6
Skirt Design: Retrac
Carbide Design: Dome
Face Design: Drop Center

Rock drilling tools manufacturer Bloom offers rock drill bits: ST58 Retrac Threaded Button Bits are one of the most important size for benching and long hole drilling underground

ST58 Retrac Threaded Button Bit

Diameter: 89mm, 93mm, 102mm, 115mm, 127mm

Skirt Body: retrac, and normal, straightrac

Face type: flat, uniface, drop center

Uniface ST58 Threaded Drill Bit

Carbide Design: Dome, ballistic, semi-ballistic/parabolic

ST58-89, retrac button bit with drop centre DC , carbide layout 14mm*8+12mm*6

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