Features: ultra-lightweight, high strength, high hardness Material: aviation lightweight aluminum Weight: 550g Packing: 20 pcs/box Thread specifications: M12X1.5, M12X1.25 Note: 1. The screw specifications are 1.5 and 1.25. Please confirm the model and specifications of your car before buying. 2. This product is suitable for unmodified wheels and small-size wheels 3. This product is not suitable for the use of small-diameter wheels. You can measure the size of the screw hole with a ruler, and it can be used if it is larger than 2.5CM. M12*1.25 Applicable cars: Nissan, Great Wall, Geely, Changan, Fuji, Suzuki. . . M12*1.5 Applicable cars: Toyota, Mitsubishi, Mazda, Honda, Buick, Hyundai, Chevrolet, Ford, Wuling, Kia, BYD , Chery cars. . . Please consult the owner for specific models! Note: The walking system is divided into tires, rims, fastening screws, etc. The inconspicuous screws in the walking system actually play a pivotal role. The overall weight of our product is lighter than the general aluminum alloy material, which can reduce the weight loss of the movable part under the suspension and increase the controllability of the vehicle. Moreover, the strength of the lightweight screw is 30% higher than that of the original steel screw, which is suitable for the installation of modified rim suspension and increased horsepower.