5 Pieces HSS Step Large Cone Drill Hole Cutter Bit Set Tool + Case New
❤Large bit has 3-sided shank and small bits have hex shank to prevent slip in drill chuck. ❤Automatically deburrs holes as you drill. 1 x 1/4-1-3/8 Step Drill. 1 x 3/16-7/8 Step Drill. 1 x 1/4-3/4 Step Drill.