*PLUMBERSSTOCK EXPERT* responded:
Hello there! Thank you for your interest in the Ridgid 20078. This rear foot caster doesn't come with the wheel. If you are referring to the caster wheel, it can be ordered as Ridgid 12293. Simply click on the link to go to the product page. Should you need anything else, please let us know. We are happy to assist you. Have a great day!