Stud Punch - Punch up through 20 Gauge Mild Steel/Aluminum in one stroke.Stud Punch features include: Punch up through 20 Gauge Mild Steel/Aluminum in one stroke Aluminum head provides strength with minimum weight, reducing operator fatigue Self-stripping design eliminates punch hang-ups Automatically centers holes on standard studs Punches 7/8" or 1-1/4" holes 1.77" Stroke Order Qty of 1 = 1 Set Below is more info on our Stud Punch