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Single-Tube Blank Drill Bit: Φ56Φ66Φ75Φ76Φ91Φ110Φ130Φ150Φ171
Couple-Tube Blank Drill Bit: Φ56Φ66Φ76
Single-Tube Blank Drill Bit: Φ75Φ91Φ110Φ130Φ150Φ171
Couple-Tube Blank Drill Bit: Φ56Φ59Φ75Φ91Φ110Φ130Φ150
Blank drill bit and Carbide drill bit