The Carlyle Curved Jaw Easy Release Locking Pliers, No. LPCJEZ10, are constructed with chrome vanadium and feature chrome molybdenum jaws for additional strength. The release mechanism is a patented design and is encased in a thermoplastic grip which prevents pinching, a common problem in open release lever designs, according to the company. These locking pliers are covered by Carlyle’s limited lifetime warranty and sold exclusively at your local NAPA Auto Parts store.