Detailed Product Description Fastener, Hex nuts , Car nut , Hub nuts, Wheel nut. Features:1) Material: Carbon steel,45#.2) Finish: Chrome Plated, Zinc Plated, black or colorful.3) Length:37mm, 48mm, .4) Hex: 13/16.5) Size: 12x1.5 6) Can produce according to customers' drawings and samples.