Retaining Ring Assortment,600 pcs,Inch, System of Measurement Inch, Ring Type External Retaining Ring, Material Steel, Finish Black Phosphate, Material Grade/Class Ungraded, Number of Pieces 600, Number of Sizes 24, Location Style External, Made in North America No, Manufacturer Location Globally Sourced, Standards DIN471, DIN472, Material Quality Standards ASME B18.27.1