Eccentric door axles made of good quality brass, nylon, stainless steel, the wear-resistant wheels are smooth and low sliding noise The roller size 25mm, designed to be used on 4mm - 6mm glass doors, hole diameter is 12-14mm (12mm recommended) Economy set of 12 rollers, good value for money, ideal for replacing old rollers shower doors Easy to place, adjustable to allow the height of the door to be adapted, easily mounted Adapts to all walls, especially shower cabin doors shower and steam cabin enclosures etc Description Features: Color: As picture shown Material: Plastic + Nylon + stainless steel Type: Eccentric Door Axles Roller Size(Dia * W): approx.25mm / 0.98in. Package Included: 4x Caster shower sliding door Note: This does not include other things, the color is based on the first picture, and the other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow