Features 1. Deep hole manufacturer: The design time of the deep hole carpenter's pencil is 45mm extension and needle nose tip, reaching hard-to-reach areas, while other carpenter signs cannot. It is suitable for through-holes or other tight area signs. 2. Sharpener for precise marking: The sharpener is screwed into the top of the mechanical drawing pencil, and it will not be lost, and your mechanical pencil will always be sharpened for good accuracy 3. Mechanical pencil: The carpenter's pencil will not slip fingers from the pencil and repeated traces will reduce the pain; the pen clip design can be easily hung on the bag, easy to use and not easy to lose, improve efficiency, suitable for construction and masons 4. Marks on different surfaces: solid woodworking pencils can draw on metal, plastic, glass, wood, paper, etc.; drawing pencils are durable and can be traced everywhere, stronger than hard lead; yellow can be on dark surfaces that are not attractive to gray lead Draw on repeatable 5. Fill for continued use: woodworking markers are pre-filled with gray lead and come with a refill box, including 3 gray lead and 3 yellow lead, which can meet your woodworking marking needs for long-term use.