7/8 12 UNJ 2B NoGoThread Plug with Taperlock Style Member only (NO HANDLE) tool Steel Rc 60-62 cold stabilized work plug Optional handles can be marked with 15 characters at no additional cost Inch Optional handles will be light blue metric yellow Certificate of Accuracy is included NOTE: selection of a 2B or 3B is based on your requirements. A 2B class plug will have a larger pitch diameter for the NoGoThread member only. The Go member is the same regardless of the class chosen. J convention requires that all Go Ring gages be made with rounded roots and that all gage plugs are marked with this J convention. (mil-S-8879 Aerospace Military & Government) Certificate of Accuracy is included.Click HERE to read about additional Long Form Cert.