Specification Brand : M & J Tooling LLC ItemName : New 1" 18 UNS 2A Solid Thread Ring GAGES 1.0 GO NO GO P.D.'S = .9625 & .9577 - DW33438MJ ItemTypeKeyword : thread-gauges Manufacturer : M & J Tooling LLC NumberOfItems : 1 PartNumber : DW33438MJ ProductDescription : YOU ARE PURCHASING THE PICTURED RIGHT HANDSOLID THREAD RINGGAGES.