This Multiple Hole 24 Sizes Hole Step Drill Bit Set can drill in Plastic, Aluminum, Copper, Stainless Steel and Many Other Types Of Sheet Metal (the board must be smaller in thickness than the height of step drill bits)
For hand-held drilling rigs, drilling machines, milling machines and machining centers, for metal sheet, maintenance and modification, bridge doors and windows, home appliances, etc..
Clears Chips Faster and Allows Particles To Escape Easily, Smooth Cutting
Description
3 Pcs (Metric 3-12 mm 4-12 mm 4-20 mm) Step Drill Bit Set Titanium Coated , Hex Shank Quick Change HSS Cone Drill Bit For Multiple Hole Step Bits Metal, Plastic Wood DIY Woodworking