Looks like they were used already, has marks all over and dings in it.
3.0 in Poly Bushing Aluminum Mockup Bushing
3.0" Poly Bushing Aluminum Mockup Bushing
These bushings work great
Love these things! Very helpfull when building crossmembers and mounts. Helps keep everything aligned durring fabrication so bushings are not twisted or preloaded when finished.