Deep Hole Marking The metal shaft's slender design is perfect for marking holes up to 5mm wide and 50mm deep. This is the perfect tool for marking drill holes through timber. | Versatile Marking The Marker is purpose-built to meet user needs and will mark on wood, plastic, ceramics, and metal. | Dual Tips for Different Thicknesses TRACER have provided two sizes of nib for marking different thicknesses of line. The reversible tip means you will never lose your alternative marker. | Site Holster Included Along with the marker's sturdy design, the included site holster will keep your marker close and protected from wear and tear. Just tuck it into a pocket with shirt/trouser clip without fear of accidental damage. There is no need for behind-the-ear storage anymore. |