Twin/double Zinc Alloy Shower Door Top Rollers for sliding shower doors. Description: 2 Top rollers supplied. Luxurious top quality product. 100% new. The truck is held in place with a screw and this is covered with a chromed plastic cover making them pleasing to the eye and easy to clean. Rollers are height adjustable to allow the door to be lined up to mate with the frame or magnetic seal where you have a pair of doors. Swivel action to also fit curved and quadrant showers. Suitable for Aqualisa, Aquaflow, CEBA, Ideal Standard showers and many others. Bottom rollers also available to buy. Specifications: A – Wheel diameter: 23mm. B – Wheel thickness: 5.8mm. C – Diameter of hole in glass: 8mm. D – Glass thickness: 6mm. E – Distance between the centre of the fixing hole and the edge of the glass: 18.5mm. Materials: 304 stainless steel micro-bearing. POM zinc alloy brass axis – it will never rust. Postage to UK and worldwide. If you still cannot find the part you are looking for or need to ask any additional questions please contact us.