Century Drill And Tool Step Drill 8 Steps #20 9/16″-1″ Hss Zirconium Coated Step Depth 1/8″ Shank 3/8″

High speed step drill for drilling and deburring holes in ferrous and non-ferrous metals plastics and wood up to 1/8-Inch thick
Double flute design reduces chatter and deburrs holes
Zirconium coating reduces wear for a longer tool life