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Remove wheel covers (if equipped) and one lug nut/bolt from each wheel. If studs are rusty, clean with a wire brush prior to installing wheel locks. Do not lubricate threads. Note: Wheel locks should always be the last nut/bolt tightened on each wheel and should be the first one loosened. By hand, install one McGard Wheel Lock onto each wheel to replace the lug nut/bolt removed in step 1. Use only one lock per wheel. Note: If original lug nuts/bolts use a washer/plastic cap, be sure to install the washer/plastic cap included in package onto the wheel locks. Notice: Air impact guns should not be used for installation of locks or lug nuts/bolts. Use of an impact gun for installation may cause over tightening resulting in difficulty of removal and permanent damage to the lock and key. Overtightening can also cause damage to brake rotors and wheel seats. Using the McGard key and a lug wrench, tighten each lock to the torque specified in your vehicle owner’s manual. Be sure to keep the key pattern squarely engaged into the lock pattern via direct inward pressure. For best results, use a torque wrench and socket for final tightening. Wheel locks should be re-torqued after 25 miles(40Km) of driving. Newly installed lug nuts/bolts should also be re-torqued. Protecting the world’s finest wheels and tires from theft since 1964. Wheel Lock bolts are designed in USA and manufactured in EU and USA. Presently, McGard is an Original Equipment wheel lock supplier to over 30 car lines around the world. These easy-to-use wheel locks function like regular lug bolts, but require a special key tool for installation and removal. The steel collar on the user friendly key guides the key into the lock pattern. The collar holds the key in alignment for easy installation and removal. The computer generated key designs allow for an infinite number of key patterns. The extra narrow pattern groove on the lock resists the intrusion of removal tools into the pattern. Every McGard wheel lock utilizes fully machined, restricted chemistry steel made specifically for McGard and through-hardened for its unsurpassed level of security. McGard's plating process includes three layers of nickel and one layer of microporous chrome producing a superior finish while protecting against rust. The bolt stem has a dacromet coating to meet O.E.M. standards. For use with steel or aluminum wheels with a tapered seat. This product may contain globally sourced materials/components.