AZ-1 Portable Hand Control from IndeMedical.com are made for use on automatic vehicles for disabled drivers with a high amount of hand control and function. If you are able to use the pedals on a vehicle then these portable hand controls are not recommended for use. It is essential that the drivers have strong grip and finger function on both hands to operate the AZ-1 portable hand control. If you are unable to operate or have limited function this portable hand control is not for you!! The AZ-1 is for a portable application for periodic use.