Amazon.com: Lerpwige Step Drill Bit High Speed Steel HSS Cone Drill Bit 1/4" Shank for Coated Hole Cutter 4-22mm for Drillinmg Power Tools Set : Tools & Home Improvement
22mm Diameter Stub Length TiN Coated Drill HSS-Co8% (M42) Cobalt 135Deg Point | eBay