General description These 4 Pieces Door Rollers are designed for various types of shower doors, providing a smooth and comfortable sliding experience. They are suitable for most shower rooms, including steam rooms and massage rooms, ensuring versatility in use. Technical specifications Diameter: 20 mm Package includes: 4 single round rollers Allowable measurement difference: 0.5-2.2 cm Other information The product features a durable waterproof protective layer that helps prevent corrosion and extends its service life. Note: The actual product color may vary slightly from the pictures due to lighting and screen differences.