This water cup holder is made of stainless steel material, durable and safe, not easy to rust, can be used for a long time. You can install the water bottle rack on the wall, so it saves space. it is convenient to use. It can provide you a clean and tidy living environment. Suitable for car, boat, home, etc. Features - Color:Silver. - Material:Stainless steel. - Size: About8.50X8.50X8.50cm/3.34X3.34X3.34inch. -Made of high-quality and environmental-friendly material, durable and practical for long time use. -Simple and practical design with sturdy structure, can be used to holding water cup. -Double steel wire design for effective distribution of weight, not easy to break. -It can be used to hold water cups, camping lights, shampoo, bottles, shower gels. etc. -Its surface is smooth, you can have the good touch, without burrs, won't scratching the cups.