1. Material: 6065 aviation aluminum 2. Total length: 50mm 3. Thread size: 1.5 4. Quantity per pack: 20 nuts 5. This product is not suitable for small-diameter wheel rims. For those modifying their wheels, please confirm whether you are installing small-diameter nuts. If unsure, measure the size of the mounting hole; if it is larger than 2.5cm, it is suitable. 6. Please confirm the model and specifications of your vehicle before purchasing. 7. Applicable vehicle series: Suitable for Toyota, Mitsubishi, Mazda, Honda, Buick, Hyundai, Chevrolet, Ford, Wuling, Kia, BYD, and Chery vehicles.