The design of this 710 punch allows the user to punch through 20 gauge (0.9 millimeter) steel studs in one easy stroke. It automatically centers each hole on standard studs. The self-stripping design eliminates most all punch hang-ups. To make it possible to use in tight places and give the operator better leverage, this item has a contoured handle design. The aluminum head provides force with minimum weight which greatly reduces operator fatigue. The 710 Metal Stud Punch (1-11/32”) has a capacity of 2-1/2” (63.4 millimeters) and wider studs. Also, 20 gauge (0.9 millimeter steel studs.