Security Check+ Fast Dry provides a convenient visual method for identification of vibratory loosening or tampering in nuts, bolts, fasteners, and assemblies. The fast drying, high visibility paint mark forms a hard 3D film that breaks easily. Ideal for quality control and warranty work. Safe on most surfaces, adheres perfectly to metal. Safe for the user, doesn’t contain Xylene. Available in standard colors and in special fluorescent colors that glow under black UV light for enhanced inspection and easy identification in low-light conditions.