23mm Shower Door Wheels - Replace your old and rusty roller for your sliding glass shower door. Just need a screwdriver for repair. Compatibility - Need glass door hole openings: 10~12mm; 10mm recommended. Thickness: 5-6mm. For curved shower doors and sliding doors. Material - Made of nylon and copper plastic alloy. Provide good elasticity and wear resistance. Easier to push and pull your bathroom door and move smoothly. Measurement - The wheels are 23mm in diameter and its thickness is 5.7mm, total length: approx. 32mm. Please make sure the size of your old roller and the diameter of the glass hole before purchase.