DescriptionEasily attaches to knee walkers, knee scooters, wheelchairs, rolling walkers and rollators with tubing diameter from 5/8 to 1.5 inches. Quick release clamp allows you to install in seconds - no tools required. Clamp securely locks cup holder in place while flexible arms prevent bottle from bouncing around. Cup holder can rotate 360 degrees enabling installation on vertical and horizontal tubing. Can be easily fitted on handlebar steering column and frame of knee walker. Fits a wide range of beverages, including 32 oz and 1L water bottles. Made with durable, rugged, yet lightweight plastic and metal materials.