There are several things to consider when selecting the right wheels or castors for your trolley.
The type of wheel needs to be a consideration point when choosing the wheels for your trolley. You need to consider the material type and if this is compatible with the environment of the trolley.
Type of wheel; White Nylon, White Polypropylene, Black Rubber, Blue Rubber non-marking, Brown Polyurethane, Grey Rubber, Black Polypropylene, Red Polyurethane to name a few?
Bolt Hole or Top Plate fitting? Take a look at your trolley and assess the fitting, it should be either a bolt hole or a top plate fitting. You can figure this out by checking the base of the trolley for a hole – if you do find that there is a fitting for a hole make sure that you measure the diameter for an accurate fitting.