I did not have any wheel spacers for my ender 3 v2 and could not wait for to have some delivered so i made my own in tinkercad these should also fit ender 3/pro/5/cr10.

9x7.95 with 5mm hole in the centre.

printed in pla+ 2.0 and doing a good job at the min over the long term i plan on replacing the with metal ones but printed ones are holding up fine for the min