---- Functions ♠ The shower door roller is made of high-quality plastic and nylon, which is stable and durable, corrosion-resistant, waterproof and noise-reducing. ♠ The doors and windows can be moved to save space, the gray wheels are practical and in line with most decoration styles, simple and sophisticated. ♠ It is an ideal choice for most showers, massage rooms, bathrooms, and even furniture accessories. ---- Product ParametersMaterial: nylon and copperColour: as shownPulley diameter: 19/23/25/27/29mmSuitable for glass thicknesses: 4-6 mmSuitable for glass hole pitch: 15-17 mmPackage content: 4 * shower cabin rollWarning: There may be a little error in manual measurement, which does not affect the use. Your shopping experiences are very important to us. Simply contact us if you have any questions.