Hand Tools
EZARC 3PCS Step Drill Bit for Metal, 1/8"-7/8" Spiral Flute Unibit Step Drill Wear-Resistant AlTiN Coated for Stainless Steel
EZARC 3PCS Step Drill Bit for Metal, 1/8"-7/8" Spiral Flute Unibit Step Drill Wear-Resistant AlTiN Coated for Stainless Steel
https://www.bizrate.co.uk/handtools/ezarc-3pcs-step-drill-bit-oid35139129187.html