You may want to consider going bigger. I've had trouble with small ones locking up in pieces of cardboard or tiny wood chips.

I got these 6" casters from Amazon... Very smooth. But I had to recess them into the workbench because the height.

https://www.amazon.com/dp/B079VXPQLL/ref=cm_sw_r_apap_p9bQDDaI9y58E

I also added floor locks so it wouldn't roll away in my driveway.

Edit: added link to floor locks https://www.amazon.com/dp/B01CPHTCTA?ref=ppx_pop_mob_ap_share