Specification Brand : M & J Tooling LLC ItemName : New M5 X .8 6g Solid Thread Ring GAGES 5 0.8 GO NO GO P.D.'S = 4.456 & 4.361 - DW33390MJ ItemTypeKeyword : thread-gauges Manufacturer : M & J Tooling LLC NumberOfItems : 1 PartNumber : DW33390MJ ProductDescription : YOU ARE PURCHASING THE PICTURED RIGHT HANDSOLID THREAD RINGGAGES.