From Energy Suspension: Uses softer 70A Durometer bushings which is best for applications which require a higher degree of insulation. Universal transmission mounts, motor mounts, cab & body mounts, restorations, "daily driver vehicles", custom body & kit cars. Can also be used for: compressors, tool boxes, generators, independent engines, etc.
You should use the shim set if you're installing these on a 3/16" thick bracket. Price is per pair.
2-1/2" OD. See picture for complete dimensions.
This is a replacement for the Ford rubber biscuit-style mount.