Package Content: Set of 4 Twin Shower Door Rollers (2 Piece Top & 2 Piece Bottom). Galvanized door rollers: Double rollers for shower door up and down 23 mm (diameter), plated surface, anti-rust; Suitable for 4-6mm glass door thickness, 13.5-14mm glass open hole. These Replacement Shower Door Wheel are suitable for most shower stalls, shower stalls and steam stalls, installed at the top and bottom of the shower door, for easy opening and closing. / p> No noise to open the shower door and these glass shower door rollers help it slide smoothly. It is easy to install and maintain.Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days.When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy it