3pcs Step Drill Set - Metric

Product details 3-Flat Shank prevents bit from slipping in the chuck; Made from high speed steel; Titanium coated; With hardness from 60 to 63 HRC Item code Size Packing BCE3SU 4 – 12 mm , 4 – 20 mm , 4 – 32 mm 10/40 sets BCE3SU-P 3/16" – -1/4" 10/40 sets