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T51
- T51 Threaded Button Bits,:
- Is the most important size for benching and long-hole drilling underground:
- Diameter 76mm, 89mm, 102mm:
- Skirt body : retrac, and normal, straightrac
- Face type : flat, uniface, Drop Centre
- 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.: