Specification Brand : M & J Tooling LLC ItemName : New M12 X 1.25 6g Solid Thread Ring GAGES 12 GO NO GO P.D.'S = 11.160 & 11.028 - DW38412MJ ItemTypeKeyword : thread-gauges Manufacturer : M & J Tooling LLC NumberOfItems : 1 PartNumber : DW38412MJ ProductDescription : YOU ARE PURCHASING THE PICTURED RIGHT HANDSOLID THREAD RINGGAGES.