General description The package contains a total of 8 shower door rollers, each with a diameter of 19 mm. These rollers are suitable for glass doors with a thickness of about 4-6 mm and are compatible with installation holes with a diameter of 12-14 mm. Made of high-quality nylon material, they are resistant to corrosion and can be used for a long time in humid environments. This bathroom door roller is perfect for sliding glass doors, windows, and shower doors.