Features: The construction markers are ideal for precise labeling, marking, and outlining on wood, concrete, stone, tiles, plaster, or other writable materials. The deep hole marker pen set consists of two deep hole markers and two construction pencils, along with a total of 36 replacement graphite and wax leads for marking on various surfaces. The deep hole markers are equipped with a particularly thin shaft to mark drill holes in hard-to-reach places. The drill hole markers also have an integrated sharpener. The construction pencils also feature a sharpener and a scale to indicate lead thickness, making them suitable for precise sketching, drawing, and marking. The carpentry pencils are of high quality, comfortable to hold, and easy to use. The leads of the mechanical pencils can be quickly replaced. Simply press the push button to release and change the lead. The deep hole markers and pencils have a practical clip for secure storage in a shirt pocket. The deep hole marker pen set is ideal for precise detail work in industry, crafts, and DIY projects. Technical specifications: Model: STAHLWERK deep hole marker pencil set. Lead thickness of the deep hole marker: 2.8. Lead thickness of the construction pencil: 2.0. Lead material: Graphite / Wax. Delivery includes: 1 x deep hole marker red, 1 x deep hole marker black, 1 x red construction pencil, 1 x black construction pencil, 12 x replacement leads for red construction pencil, 12 x replacement lead for black construction pencil, 6 x replacement lead for deep hole marker red, 6 x replacement lead for deep hole marker black.