Malco PL1 Metal Stud Punch Crimper Punch lock stud crimper that uses compound leverage to increase your mechanical advantage nearly 7 to 1 Unique punch and die shape creates a rectangular crimp to form a sturdy bond Aluminum/zinc die-cast 'C' frame and rust-resistant, nickel-plated steel handles and parts; non-slip vinyl grips with hand stops Replaceable punch and die; maximum capacity 22-gauge stud and runner Weighs 1.2 pounds shipped