[Features] Shower door parts are easy to move and install.You can also easily move the sliding door, save space, more beautiful. Applicable to shower, massage cabinet, bathroom, massage tub and other furniture accessories. [product information] Name:roller set Product material:Stainless steel Product size:Wheel diameter = 25mm Packing list (you can get after purchasing one item): 2*scroll wheel 2*Anti-collision block 2*screw Please understand: 1. Due to the long shipping time, the item may be damaged during the shipping process, if the item is damaged, please leave us a message through the official website immediately before posting comments, and I will solve the problem for you. 2. Due to manual measurement, the size may have an error of 1-3cm. 3. Colors may vary from monitor to monitor.