We have both sets
Hydraulic Hole Puncher Set (63 - 114 mm, 2 1/2" - 4 1/2") - EZ-Tools USA Professional Tools
And this one now
Hydraulic Hole Puncher Set (22 - 60 mm, 7/8" - 2 3/8") - EZ-Tools USA Professional Tools
They will punch a hole 7/8 to 4 1/2 inch. He used it on 1/16 steel. It puts a perfect hole in any contour and does not flatten body lines. very neat tool. The dies are super strong. You can punch a hole in a bumper. You can get dies separate up to 6 inch. Also square