Mini 4WD Tire Wheel Balancer Jig Tool (Wheel Balance Adjustment Jig) Magnetic Type, with Mini 4WD Shaft and Magnet Compatible Tire Diameter: 22-38mm We recommend this magnetic type as it has less rotational resistance than bearing types. This is a balancer jig tool to improve the stability of your Mini 4WD during走行 (running) by adjusting the tire wheel balance. Balanced tire wheels significantly improve straight-line performance and stability during jumps. Set Contents: ・Jig tool body ・Magnet ・Shaft ※ The shaft is cut to fit this jig and can be used immediately. (Please prepare your own wheels and tires) Balance is achieved by floating one side of the shaft axis in the air, with as little rotational resistance as possible. 【How to Use】 1. Set the shaft on the tire wheel to be balanced. (Please use the tire wheel to be balanced by passing the shaft through it) 2. Confirm that the shaft rotates lightly with only one side floating. 3. Wait until the wheel stops rotating; the heavier side will concentrate at the bottom and stop. 4. Mark (indicate) the upper part. 5. Attach a weight (masking tape, etc.) to the wheel rim (inside) where you made the mark. (You can also shave the wheel, but it requires very precise work, so we recommend masking tape.) 6. Rotate again and repeat steps ③ to ⑤ to adjust. 7. When the balance is achieved, the stopping point becomes ambiguous, and the rotation becomes difficult to stop. This is the completed state. After processing, you can feel a significant reduction in vibration when you set the tire wheel on the machine and turn on the switch. This product is manufactured using a 3D printer for the main body. There are no problems with its intended use, but please note that the color may differ from the image, or the shape may be slightly different. It is also possible to combine with other items on sale, so feel free to ask. We manufacture many processing jigs for use with Mini 4WD. If you like, please take a look at our other processing jigs as well.