The Twin Wheel Duo Powerpack attaches to any wheelchair in literally seconds. Once fitted you will never need to push the chair again. Simply walk behind with your thumb on the control and let the Powerpack do all the work for you. The Duo model was introduced for those who require that extra traction, if you live in a hilly area or need to tackle slippery slopes or gravel driveways, this is the model for you! Learn More