WHLASMB1746 2.5"x7.5" Flat Free Drive Wheel Assembly for Jazzy Select Traveller, Z Chair, and Pride Go Chair Power Chairs Tank Urban Courier 150 Safety in low light conditions require K92 3537 Safety in low light conditions require both bright front illumination and a tail light to show your presence to traffic We reject that misguided philosophy and offer our cycling customers some of the best aftermarket fenders that are available If replacing a wheel assembly on an older model you will need to change both of them at the same time with this newer wheel assembly 5" Flat Free Rear Wheel Assembly with black rim and gray tire for the Go Go Go Chair and the Jazzy Z Chair and Select Traveller power chairs