Y40B ball-tooth drill is special for high-strength drilling and wear-resistant 4-ball-tooth drill for mining tunnels.

Y40B ball-tooth drill is special for high-strength drilling and wear-resistant 4-ball-tooth drill for mining tunnels.

Y40B ball-tooth drill is special for high-strength drilling and wear-resistant 4-ball-tooth drill for mining tunnels.

Y40B ball-tooth drill is special for high-strength drilling and wear-resistant 4-ball-tooth drill for mining tunnels.

Y40B ball-tooth drill is special for high-strength drilling and wear-resistant 4-ball-tooth drill for mining tunnels.

Y40b Spherical Tooth Drill Bit High Strength Rock Drilling Wear-Resistant 4 Ball Tooth Drill Bit Special for Mining Tunnel

Y40b Spherical Tooth Drill Bit High Strength Rock Drilling Wear-Resistant 4 Ball Tooth Drill Bit Special for Mining Tunnel

Y38b Y40b Spherical Tooth Drill Bit High Strength Rock Drilling Wear-Resistant 4 Ball Tooth Drill Bit Special for Mining Tunnel

For Y38b Spherical Tooth Drill Bit High Strength Rock Drilling Wear-Resistant 4 Ball Tooth Drill Bit Mining Tunnel Dedicated

For Y38b Spherical Tooth Drill Bit High Strength Rock Drilling Wear-Resistant 4 Ball Tooth Drill Bit Mining Tunnel Dedicated

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High Hardness Mining Button Drill Bit R25 Thread Button Bit 33mm - 45mm Rock Drilling Tools

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Coal Mining Bit PDC Drill Bit 75mm- 133mm Diamond Coring Bit For Break Pebble Rock Well & Exploration Machine Of Drilling Hole

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