Installation details Please remove the damaged wheel and compare it with the picture, with an allowable error of 1-3 millimeters Rotation angle: 360 degrees rotation Need to confirm: whether the direction of the wheels is left or right, and whether the number, spacing, and shape of the holes in the luggage (or old wheels) are consistent with the new wheels. There are carved left and right markings on the wheels, please take a look before installation Screw in the screws and do not tighten them until all screws are in place. Before tightening any screws, leave some tolerance or room for movement. Install the new wheels and align the screws (if not suitable, check the position and shape of the holes yourself) Tighten and complete.