3PCS Punta per Trapano a Passo per Metallo, 4-12mm 4-20mm 4-32mm Flauto Spirale Unibit8980
Includes 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 24 mm, 26 mm, 28 mm, 30 mm, 32 mm. [Coating]Step bits coated with aluminum titanium nitride, rated at 89HRC for exceptional hardness and thermal properties.