Mirror for Tru Balance 3 Seats on Quantum Power Chairs (ACC155833) Shoprider XtraLite 4 (TE 787NA UL4) Think of your chair's junction Knob & Harness:Without Knob & Harness Think of your chair's junction box as the Grand Central Station for the electric signals that you send your chair's motor and comfort controls RCGD RaceGuard A synthesis of special india rubber and several layers of nylon fabric offers very effective protection against penetration punctures while minimizing penalties This mirror for Tru Balance 3 seats on Quantum power chairs provides a measure of enhanced safety and "drivability" of your Quantum Think of an armrest mounted mirror as you would think of a rear view mirror on any other vehicle