Metal Stud Punch Punch Type Metal Stud Punch Creates Hole Size 1 11/32 in Weight 7.5 lb Overall Length 20 in Maximum Jaw Opening 2 1/2 in Grip Style Ribbed Maximum Metal Thickness 20 ga Application Steel Studs Insulated No Features Aluminum Head Contoured Handle Design Self-Stripping Design Frame Material Aluminum Handle Material Steel Jaw Opening Type Manual