A. Functional Features - This wheel bolt guide pin tool can help you install wheels and tires more easily. By aligning the bolt holes of the wheel with the hub, you may not need to use your knees to balance the wheel when fixing the wheel bolts to the car. The knurled end can ensure a firm grip during installation and removal. - Our custom wheel suspension bolts are made of high - strength cold - forged 10.9 - grade metric carbon steel. Additional heat treatment can ensure reliable strength, durability, and performance. - The precision - machined threads can ensure a good fit with the hub of your vehicle. The special zinc coating can provide good anti - corrosion, anti - rust, and anti - scratch properties. - Before purchasing, it is advisable to check the bolt thread size of your vehicle, as the sizes may vary for different vehicles. Also, make sure that the diameter of the bolt holes in your wheel is greater than 14 mm. B. Specifications - Material: Steel - Sizes: M12*1.5, M14*1.25, M14*1.5, M12*1.25 (optional) C. Installation Instructions 1. Screw it into one of the bolt holes located at or near the 12 o'clock position. 2. Install your wheel, and the wheel suspension bolt will pass through one of the bolt holes in the wheel. 3. Use other bolts to tighten the wheel. 4. Remove the wheel suspension bolt. 5. Install the last bolt. 6. Tighten the bolts in a star pattern according to the original factory torque specifications. D. Package List 1 installation guide bolt