●Complete set – the set includes 1 x deep hole marker, as well as 3 x black, 2 red and 2 yellow refills. The construction pen is the optimal tool for marking in holes. ●Extremely robust – Our carpenters pencil is characterised by extra robust leads. This makes the drill hole marker the ideal construction site pen for craftsmen. ●Integrated sharpener – a sharpener is integrated into the top of the drill hole marker. Thanks to the thin shape, the pen is also perfect for hard-to-reach places. ●Ideal for the home – the deep hole marker is suitable for numerous surfaces, such as wood, plastic and metal. With the belt clip, the marker can be optionally attached to bags. ●Extremely reliable: 30 days money back promise. If you are not 100% satisfied with your marker pen, then send it back and get your money back immediately.