The Wheel Lock Handle Extension is intended for use with individuals who would benefit from a non-rigid, larger wheel lock handle. For individuals with low vision, printing the device using a bright color can also be beneficial. The device has been tested on standard Invacare Tracer manual wheelchair and other depot wheelchairs using standard wheel locks; success is not guaranteed on different types of wheel lock handles. All instructions for printing and use can be found in the "WheelLockHandleEx_ID.pdf" file.