_x005F_x000D__x005F_x000D_Those rollers are affixed to the and bottom of shower doors in order to provide smooth running when you open and close your shower doors, can move the bathtub anytime to anywhere that you want. Perfect for most shower enclosures, shower cabins, steam cabin enclosures and bathtub._x005F_x000D__x005F_x000D_Feature_x005F_x000D__x005F_x000D_- Color: As shown_x005F_x000D_- Material: plastic and metal_x005F_x000D_- Package Size: 20 x 20 x 10cm_x005F_x000D_- Wheel Diameter: 25mm_x005F_x000D_- Sturdy and secure construction_x005F_x000D_- The rollers are affixed to the and bottom of shower doors in order to provide smooth running when you open and close your shower doors, can move the bathtub anytime to anywhere that you want_x005F_x000D_- Perfect for most shower enclosures, shower cabins, steam cabin enclosures and bathtub_x005F_x000D_- Diameter of the wheel: 25mm_x005F_x000D_- Easy to install and use, and won& 39;t damage your glass doorPacking list8 x Shower Door Wheels