Equipped with double ball bearing and PU tread wheel so the wheel will roll silently and smoothly. You can remove plastic hubs and spanner to fit bigger shaft than the 12mm default shaft.
We ordered these wheel exclusively as replacement for Thailand's JUMBO and SUMO Hand trucks. The tread is Brown ThermoPlastic Rubber, so they are guaranteed to roll smoothly and quietly. Compare to the default Black PU wheel, TPR wheel may last 2 times longer.