With the Crc MarkerPen, you can easily apply clear and high-opacity yellow marks to virtually any surface. Whether you work with metal, wood, plastic, rubber, or glass, the fast-drying and water-resistant liquid paint formula delivers dependable, durable results both indoors and outdoors. Thanks to the 4.5 mm medium tip with valve action, you control paint flow accurately to draw sharp cut lines, identify components, or mark drill holes without mess. This convenient pack of 12 ensures you always have a dependable marking pen within reach on the job.