Silverline Titanium-Coated HSS Step Drill Set 3pce

Self-starting step drill with storage wallet for precision drilling of sheet metals, alloys and plastics up to 4mm thick. Clearly-marked 2mm graduations. Quick-change 6.35mm (1/4") hex shank. Includes sizes 1/8"-1/2", 3/16"-1/2" and 1/4"-3/4".