Tuff Grade TGDB-10233 Step Drill Bit, 1/4 in Dia Min Hole, 3/4 in Dia Max Hole, 9 Steps, M2 HSS, 3/8 in Shank Tuff Grade Step Drill Bit, Imperial, #3 Letter/Wire, 1/4 in Diameter Minimum Hole, 3/4 in Diameter Maximum Hole, 9 Steps, 1/16 in Step Depth, 3/8 in Shank...
