I wanted to build the base for my B & D Workmate as demonstrated in a YouTube video by Marty Backe. While no plans / dimensions were given, a link was provided to this product on Walmart. With the casters in hand, I was able to construct a base for my Workmate which looks like and functions as the one in the video. I am going to order a 2nd set for a roll around tool / storage station I am building.