合金鉆頭及空白圓鉆頭  Carbide Drill Bit and Blank Drill Bit

單管空白圓鉆頭規(guī)格：(Single-Tube Blank Drill Bit)φ56 φ66 φ75 φ76 φ91 φ110 φ130 φ150 φ171

雙管空白圓鉆頭規(guī)格：(Double-Tube Blank Drill Bit) φ56 φ66 φ76

單管合金鉆頭規(guī)格：(Single-Tube Carbide Drill Bit) φ75 φ91 φ110 φ130 φ150 φ171

雙管合金鉆頭規(guī)格：(Double-Tube Carbide Drill Bit) φ56 φ59 φ75 φ91 φ110 φ130 φ150