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<td>Suitable for drilling operations in medium to extremely hard formations (f = 7~18). Surface set series (f = 7~15); Impregnated series (f = 7~18).
● Selection (mm)
Coring bits: Φ60/41.5, Φ75/54.5, Φ91/68, Φ94/74, Φ110/90, Φ113/93, Φ133/113, Φ153/133
Non-coring bits: Φ75, Φ94, Φ110, Φ113buy Drill Bits
website:http://www.xianccteg.com/drill-bits/</td>
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