Specification Brand : M & J Tooling LLC ItemName : New 9/16 14 UNS 2A Solid Thread Ring GAGES .5625 GO NO GO P.D.'S = .5146 & .5096 - DW33451MJ ItemTypeKeyword : thread-gauges Manufacturer : M & J Tooling LLC NumberOfItems : 1 PartNumber : DW33451MJ ProductDescription : YOU ARE PURCHASING THE PICTURED RIGHT HANDSOLID THREAD RINGGAGES.