R pins , R clips made of spring steel, SAE1070, Hardened. in DIN 11024 Standard, single coil or double coil available R pins, DIN 11024Material by spring steel, SAE 1070Surface: Zinc pated - Color : yellow zine, blue zine or white zinc plated Chrome platedSingle coil or double coil available;Size: 1.2-8mm R pins, R clips, R cotter pins - DIN 11024