Moto Bearing Tool – Roller Skate Wheel and Bearings Tool – Now you can quickly and easily change your wheels and bearings with this small tool. Use the axle wrench to take off your axle nuts. Then turn the knob to retract the bearing tool and easily pull your bearings out. It’s as simple as that. This tool is for 8mm bearings and is available in Red, Purple, Turquoise, Green