(Retrac)Button Bits - King Rock Drilling Tool
2019-11-25 · T60-92mm, T60-96mm, T60-102mm, T60-115mm, T60-118mm, T60-127mm, T60-140mm, T60-152mm etc. T38 threaded button bits could be produced as per your requirements completely, such as flat face or drop-center face; normal body or retrac body; spherical buttons, ballistic buttons or parabolic buttons. INQUIRY.
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