General description Our CCYKXA Set of 4 Double Rollers for Sliding Shower Doors features electroplating plastic alloy construction, ensuring durability and resistance to rust. This design not only maintains the strength of the rollers but also minimizes the risk of glass breakage during collisions. Each roller is equipped with an anti-collision block for enhanced protection of your shower door. Technical specifications Wheel diameter: 23 mm Glass thickness compatibility: 4-6 mm Glass opening compatibility: 12-14 mm Load capacity per pair: 30-35 kg Height adjustment: 7-8 mm adjustable via upper screw Usage It is recommended to install a glass door within the load-bearing range. For optimal performance, replace the plastic shell shower door sliding rollers every six months and the metal shell pulley annually. You can install additional replacement wheels to distribute the load across each pair of rollers.