8 Piece Shower Door Rollers Single wheels, includes 4 upper rollers and 4 lower rollers. Good for replacement shower door rollers. Wheel diameter is 25mm, wheel width is 6mm. Minimum glass mounting hole is 11mm, maximum glass thickness is 6mm. The distance between the center of the mounting hole and the edge of the glass is 25mm. The shower door roller is made of brass rod and ABS plastic material, it is rust resistant, sturdy and durable. Comes with screws and plastic cover. These single shower door rollers fit glass shower doors. The sliding door roller kit makes the door sliding and effort saving. A practical hardware for the sliding glass shower door. The bath runner is easy to move and install. It can also move the door to save your space. Specification: Material: ABS plastic Size: Diameter of the wheel: 25mm Maximum glass thickness: 5.5mm The distance between the center of the mounting hole and the edge of the glass: 25mm Suitable to most shower doors. Package includes: 4 pcs Shower Door Upper Rollers 4 pcs Shower Door Lower Rollers About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.