Size: 9/16" - 13/16"5-Step Reamer (9/16", 5/8", 11/16", 3/4" & 13/16")Enlarge, Align And Drill Holes In Steel, Stainless Steel And Tough Alloys90 Degree Drill Point1/2" Flatted ShankFor Use In Portable Power Drills Or In A Drill PressCut Burr Free Holes In Material Up To 1/2" ThickSharp 2-Flute Design For Fast, Stable Cutting