10 inch Metal Stud Crimper Drywall Tools, Punch Lock Framing Fastening Crimping Hand Tool Soft Touch, Non Slip Handle Insert. Unique single hand operation. Use the drywall tool for fastening metal studs together without screws or rivets. Extended 10 inch size allows the user extra leverage for easier operation. Squeeze handles together with one hand while holding stud in place. The drywall tool creates a rectangular crimp, bending over thicknesses of channel and stud at the same time to form a sturdy bond.