Make of zincs alloys, strong and enduring, which is rustproof, waterproof and heat resisted, not easy to damage Adjustable: The glass shelf is designed to be adjustable, so it can fit most glasses The glass shelf is finely plated to be unfading, which is a good option The glass shelf is a fine replacing option when the old gets break The glass shelf is designed to be nonslip, which can better hold your glasses, Manufacturer: RGYBAO