The wheel is the key of the supermarket trolley duration. 4 good branded wheels could be more expensive than the supermarket trolley itself, but you will find it’s worthy.
Types of sizes of wheels: 3”/4”/5”(75mm/100mm/125mm)
Types of material of wheels: PVC/PU/TPR/Nylon
Types of escalator wheels: 1 disk/2 disk/3 disk/4 disk
Wheels with 0/1/2 bearings
With or without brake
Swivel or fixed