These 3 step drill bits with hexagonal shank (1/4 inch, 6 mm) can be used in any drill or bit holder and are delivered in a bag. The set consists of 3 different step drill bits with the following sizes:
1 x 3-12 mm 1 x 4-12 mm 1 x 4-20 mm
Steps of 2 mm. This type of tool is mainly used to make holes in sheet material (up to 4 mm thickness).
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