It is mainly used for four-wheel alignment. The frame is first installed with the car's hexagonal coupler, and then after installing the carbon fiber adjustment wheel, it can be easily fixed by hand twisting the wheel screw. If a certain swing arm is relatively high off the ground, due to the action of gravity, the wheel adjustment plate will rotate to a certain angle, which is convenient for observation, so as to set the positioning height of the swing arm to achieve the purpose of four-wheel balance.<br><br>Weight:60g Colour:As shown Material:carbon fiber + metal<br><br>Package Contents: 4 x Carbon Fiber Wheel Tool 4 x M4 Nut<br><br>Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.