I wanted to convert my stainless steel shop work table into a wheeled table I could move around my shop. All the wheel kits I found were priced high with the inserts $35 to $40. These were about $14 without the inserts. The length of the inserts is important and an interference fit is important. Print a test one and see if it is snug. Get a rubber mallet is my advise.

I used the following parts.

https://www.amazon.com/dp/B09GFDSRMD?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1