Atoplee 4 Pcs. Shower Door Rollers Runners Wheels - Replacement Part Bathroom Product Features 1. The pulley is made of copper + POM wheel, and the screw is made of stainless steel, which is corrosion-resistant, rust-proof and has good comprehensive performance. 2. The pulley has strong bearing capacity and good stability; the friction coefficient is small and the mute effect is good. 3. Easy to install, often used for bathroom glass sliding door pulleys/rails. Roller wheel diameter:27mm Comes with screws, suitable for 4-6mm thick shower doors. Roller wheel inner hole: 4mm, fixed with M4 screws. Roller wheel thickness: 5.8mm, Package included: 4 pcs Shower Door Rollers Runners Wheels Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!