The phone holder is designed to mount easily onto your wheelchair or scooter. The phone holder is attached to your wheelchair or scooter with a strong alloy clamp, embedded with a weatherproof rubber lining so that damage is not caused to the frame. Your phone is securely inserted into the extended phone holder, which can expand up to 4 inches. Once the phone holder is installed and your phone is securely inserted and fastened in the extended phone holder, you can begin to enjoy the benefits that your phone has to offer; music, GPS, reading, and all the things that you want to make your life easier without the worry of losing your phone! Phone holder is an excellent accessory for your wheelchair and scooter needs.