6"x2" Front & Rear Caster Wheel for the Quantum Q6 Edge 2.0 & Q6 Edge 2.0 X Power Chairs (WHLASMB7110039) Shoprider Smartie (UL8W) you must use a battery

you must use a battery charger designed for it

This Replacement Wheel is compatible with the following Trailer Tot Bike Trailers: Trailer Tot 2018 Alloy-Frame Double Bike Trailer

235 & 600T mobility scooters

Note that these are for the 50 cc version of the Zuma

Like a seat belt in a car

6"x2" Front & Rear Caster Wheel for the Quantum Q6 Edge 2.0 & Q6 Edge 2.0 X Power Chairs (WHLASMB7110039) Shoprider Smartie (UL8W) you must use a batteryUnlike many power chair components, this 6"x2" caster wheel for the Quantum Q6 Edge 2. 0 & Q6 Edge 2. 0 X has been designed to work equally well on both the front and rear caster assemblies. The solid flat free tire uses a nice ribbed tread suitable for indoors or out on the pavement. The bearings and spacer are included. Pride Mobility Quantum: WHLASMB7110039