The easy way to cut the hole size you want.
Each tool cuts parallel hole sizes.
For use on sheet metal to stated maximum thickness.
Size range.1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4in.
Maximum Material Thickness.1/8in.
Shank to fit chuck size. 3/8in.
When driling metals always use a coolant.