Retaining Ring Assortment 600 pcs Inch System of Measurement Inch Ring Type Crescent Retaining Ring E-Style Retaining Ring 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 Material Quality Standards ASME B18.27.1