Specification Brand : M & J Tooling LLC ItemName : New 11/16 28 UN 2A Solid Thread Ring GAGES .6875 GO NO GO P.D.'S = .6632 & .6594 - DW38420MJ ItemTypeKeyword : thread-gauges Manufacturer : M & J Tooling LLC NumberOfItems : 1 PartNumber : DW38420MJ ProductDescription : YOU ARE PURCHASING THE PICTURED RIGHT HANDSOLID THREAD RINGGAGES.