Needed some 3 inch swivel casters for a small project. I usually use locking casters but that wasn't a requirement for this job.
Went to Northern Tool today where I found these casters for $4.99 each:

Casters $4.99 ea Item 189911

http://www.northerntool.com/shop/too...atchallpartial

Then I remembered something I saw at NT a few days ago and checked and found this item which had the identical casters and all the mounting hardware:

Hardwood dolly $11.99 ea Item 001880

http://www.northerntool.com/shop/too...atchallpartial