ROWHEELS Wheelsets use the patented ROWHEELS reverse propulsion system which allows users to benefit from the biomechanics of pulling the handrims rather than pushing to go forwards. This unique pulling action is proven to eliminate the forces that lead to upper limb (shoulder, elbow, wrist) injury and the pain which is experienced by over fifty percent of wheelchair users. The unique ROWHEELS pulling action engages up to 4 times as many muscles, compared to pushing, while using more capable muscles in the upper back and shoulders.