If you want that exact kind, your going to need to figure out the manufacturer and dig through their site trying to identify the part. A printed DidiKey and Mouser catalog are pretty good for that type of search since they sometimes have nice drawings. They may not be manufactured anymore either. Worse case, just replace the set when one needs to be replaced. I wouldn't switch the whole cab over unless your doing something like swapping parts between a bunch of cabinets all the time.