Description Fits everywhere: rollers in showers, bathrooms, hot tubs. These rollers can be easily opened through our shower doors. Simple for you: the shower roller guide needs to be replaced. You can do the repair yourself, usually all you need is the right type of shower enclosure and a screwdriver. HIGH QUALITY: The Shower Enclosure Roller Set is the highest quality luxury shower door roller. Sliding shower door rollers are designed to combine high strength, excellent flexibility and ideal sliding properties. Easy to Slide: Casters for showers and massage rooms, bathrooms, hot tubs and even furniture. As door and sliding system feature: Replace the shower door rollers for easy sliding. Replacement rollers for 23 mm diameter shower doors. These shower door rollers glide easily and are designed for 4-8mm glass doors. Roller construction is brass and plastic. Specification: Material: Copper + POM Wheel Pulley diameter: 23mm Glass thickness: 4-6 mm. Cutout: 15-17mm