The furniture style caster is a foot that adds mobility to an application and can mount directly to a T-slot profile end, or to the profile side or end using a base plate. There are options available with or without brakes. It works well in office and home solutions such as desks and furniture.
For technical details and images, please search for the product using the 80/20 interactive catalogue found here: https://catalogs.8020.net/80-20-Catalog-26/C/.