DT4901-QZ,707-2774,Dewalt EXTREME 系列 2.5mm直径 钴高速钢 钻头 DT4901-QZ, 2.5mm长 直杆, 57 mm总长 ,DeWALT
Precision ground twist drill bit manufactured to DIN 338
Heat and wear resistance properties
Right hand cutting helix, type N flute
5% cobalt alloyed High Speed Steel
Unique tip improves efficiency and eliminates walking
2 bits of the same size
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