This listing is for a set of four. Some like to call them battery rest insulators while others like to call B_ . Here's what I know, I have seen an image from a well known colleague that found a metal rack/frame with these as legs indicating some form of industrial use, these four also have some rust on them. I have also seen an image of them as legs in an antique piece of furniture. Imagine a insulator case built with these as legs😜 I would call them VNM, a couple light scratches and a few little pressure fractures at the grooves. 150.00 shipped or 135. Delivered to Yuma, I would appreciate payment know if the second option is chosen.