- cross bit
- button bit
- rotary roller bit
- button drag bit
- 120 dB (A)
- 130 dB (A)
- 140 dB (A)
- 115 dB (A)
- 90 dB (A)
- 85 dB (A)
Q) Tri-cone drill bit is a type of
Solution:
(c) rotary roller bit
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