Alloy Drill Bit And Blank Round Drill Bit

Single-Tube Blank Drill Bit: φ56 φ66 φ75 φ76 φ91 φ110 φ130 φ150 φ171
Double-Tube Blank Drill Bit: φ56 φ66 φ76
Single-Tube Carbide Drill Bit: φ75 φ91 φ110 φ130 φ150 φ171
Double-Tube Carbide Drill Bit: φ56 φ59 φ75 φ91 φ110 φ130 φ150