This Nova Cup Holder is made of durable plastic and is the perfect adjustable drink holder for your mobility product. It attaches to most walkers, rollator walkers, transport chairs, and wheelchairs, and its patented and unique design allows this cup holder to attach at any angle on a slanted tube 3/4, 7/8, or 1 inch in diameter thereby keeping it straight and balanced. This unique cup holder is also adjustable which allows it to hold and secure different size cups and drinks from 2.25 to 3.75 inches in diameter, and it is 4 inches high with an opening to allow for cup and coffee mug handles. The Nova Cup Holder folds quickly when not in use thereby preventing damage to the cup holder and keeping your mobility product streamlined, and since you only need a Phillips screwdriver to attach it, installation is quick and easy.