With the Crc MarkerPen, you apply clear and durable red markings across virtually any surface with ease. Thanks to the highly opaque paint formula and durable 4.5 mm tip, you can accurately mark cut lines, drill points, or inspection codes on metal, wood, rubber, plastic, glass, and stone. The integrated valve system ensures controlled and consistent paint flow, even on rough or damp substrates. The fast-drying paint resists water and uv exposure, keeping your markings clearly legible indoors and outdoors. This practical box of 12 pens ensures you always have the right marking tool ready on the job site or workshop.