Eccentric Door Rollers made of good quality brass, nylon, stainless steel, wear-resistant wheels are smooth and low noise slidingRoller size 25mm, designed to be used on 4mm - 6mm glass doors, hole diameter is 12-14mm (12mm recommended)Economy pack of 12 rollers, good value for money, were perfect for replacing old shower door rollersEasy to place, adjustable to suit the height of the door, easy to mountFits all walls especially shower cubicle doors and steam cabin enclosures etc. Specifications:Color: As picture shownMaterial: Plastic + Nylon + Stainless SteelType: Eccentric Door RollersRoller Size(Dia*W): approx.25mm / 0.98in.Package Included:4x Shower Sliding Door RollerNote: This does not include other things, the color is based on the first picture and the other pictures are not showing that the effectDue to the differences between different monitors, the picture may not reflect the actual color of the item.Due to manual measurement. Please allow the deviation. Thank you!