Simple construction type sliding door wheel set, one touch mounting and dismounting from the side of the door panel With up and down, front and rear adjustment function, the door panel can be easily corrected after installation. The door panel adjustment only requires the use of a #2 cross screwdriver, no special tools are required. The wheel material is made of plastic steel, which has excellent slidability and low sound. Another bearing wheel "DHDU" is available. Install the auxiliary special gantry (optional) to fix the sliding door to prevent the sliding door from sliding.