?Material and craftsmanship?: Made of high-quality steel for wheels, the wheel lock is stronger and more corrosion-resistant. Each lock undergoes high-temperature quenching and tempering to ensure the strength and toughness of each lock, making it durable. Each lock undergoes strict surface treatment + 3-layer electroplating process, with a smooth surface. After strict laboratory salt spray testing, it ensures that the wheel lock will not rust for a long time. ?Applicable models? MOTORS 1960-1984?BUICK 1963-1989?CADILLAC 1938-1990?CHECKER 1970-1976?CHEVROLET 1956-2001 CHRYSLER 1963-1987?DODGE 1956-2012?EDSEL 1959?FORD 1940-2018?GMC 1948-2000?INTERNATIONAL 1961-1980 JAGUAR 1974-1979?JEEP 1946-2015?LINCOLN 1965-2019?MAZDA 1994-2009?MERCURY 1948-2011?NASH 1953-1956?OLDSMOBILE 1954-1987?LYMOUTH 1956-1987?PONTIAC 1937-1985?SAAB 1971-1987?STUDEBAKER 1937-1966?WILLYS 1942-1954 ?Wheel lock size?1/2 with a 60° conical seat, 1.38" tall,set of 20 wheel nuts+4 locks +2 keys One for normal use and one for spare. No more worries about losing the key. ?Notes?: Please measure the back seat distance, lateral aperture and thickness of the door to ensure it fits your car. You must use the Amazon Parts Finder to see if the size matches the wheel hub of your car. The dedicated key does not match the one on the market, please keep your key properly. ?Service and Support?: Our products come with a one-year warranty. If you encounter any problems during use, please contact us as soon as possible and we will solve the problem for you as soon as possible. No need to worry about after-sales problems.