General description Our chrome shower door rollers allow your shower door to glide effortlessly. The universal design ensures they fit most shower cubicles, shower enclosures, and steam rooms. Technical specifications Material: Durable zinc alloy and tough plastic Wheels diameter: 25mm Wheels thickness: 6mm Glass thickness compatibility: 4-6mm Glass hole diameter: 12mm Includes: 2 upper double rollers, 2 lower double rollers, 4 short pieces, and 2 spare double rollers