Features: Stud crimpers for fastening metal studs. Stud crimpers are for fastening metal studs together without screws or rivets. Squeeze handles together with one hand while holding stud in place. The punch and die shape creates a rectangular crimp, bending over thicknesses of channel and stud at the same time to form a sturdy bond. Spring loaded with non slip handle. Specifications: Material:Chrome vanadium alloy steel+TPR Color: Green+Yellow Total length: 250mm Role: Punching Shape: Flat mouth