Specification Brand : M & J Tooling LLC ItemName : New 7/8 28 UN 2A Solid Thread Ring GAGES .875 GO NO GO P.D.'S = .8506 & .8468 - DW33335MJ ItemTypeKeyword : thread-gauges Manufacturer : M & J Tooling LLC NumberOfItems : 1 PartNumber : DW33335MJ ProductDescription : YOU ARE PURCHASING THE PICTURED RIGHT HANDSOLID THREAD RINGGAGES.