The M-120-A-TI Body Tree Threaded bushing welds to the titanium rear tree of a funny car chassis and the body hinge attaches to this. The tapped 5/16" - 24 bushing is made from 3/4" RD 64 titaniuml and measures 7/16" O.D., and length is 1 3/16". There is a pdf chart that may be downloaded from our website, http://mckinneycorp.com/downloads/pdf/bushing.pdf, that will give you a list of some of the bushings that we carry. Should you not be able to find the bushing that you're looking for, call and we'll be happy to assist you in finding what you need.