Made with the highest standards in the US. Meets or exceeds all applicable DOT standard FMVSS125 and all state and legal requirements. Reflex tooling provides reflectors with more than 80 candle power beam. Warns traffic up to a half mile away at night! Phosphorescent inner triangle warns day time traffic. Unit needs no power source. No skid rubber feet keep the reflector in place in high wind. Kit of 3 triangles in a carrying case. Placement instructions permanently printed on case and triangle.