Rennie Tool Rennie Tools 3-12mm Hss Spiral Flute Step Drill Bit Titanium (Tin) Coated Cone / Hole Cutter For Steel
Description
2 flute spiral groove step drill - Gives a good fast and smooth cut. 4-12mm - This metric step drill has 5 steps - 4mm 6mm 8mm 10mm 12mm. So you can drill accurate holes to any of these sizes.
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