Deep hole making machine: deep hole woodworking pen, 45mm long, reaches the area that other woodworking brands can't reach and is suitable for marking passages or other narrow areas. Mechanical pencil: The wood processing pen does not slip off the finger, and repeated marks reduce pain; pen holder design can be easily attached to the bag, easy to use, not easy to lose, high efficiency, suitable for construction and brick layers Marking on different surfaces: solid wood pens can be drawn on metal, plastic, glass, wood, paper; character pins are strong, grease can be drawn in any place, stronger than hard. Built-in pencil sharpener for marking prrzises: the pencil sharpener is screwed on the top into the mechanical pencil mechanical, no one will be lost, the mechanical mechanical pencil is always sharp, precision Refillable for later use: the wood treatment mark is pre-filled with gray and comes with a reinforcement box that can cover your needs at long term wooden working marksDeep hole making machine: deep hole woodworking pen, 45mm long, reaches the area that other woodworking brands cannot reach and is suitable for marking passages or other narrow areas.Mechanical mechanical pencil: The wood processing pen does not slip off the finger, and repeated marks reduce pain; pen holder design can be easily attached to the bag, easy to use, not easy to lose, high efficiency, suitable for construction and brick layersMarking on different surfaces: solid wood pens can be drawn on metal, plastic, glass, wood, paper; character pins are strong, grease can be drawn in any place, stronger than hard. Built-in pencil sharpener for marking prrzises: the pencil sharpener is screwed on the top into the mechanical pencil, no one won't be lost, the mechanical pencil is always sharp, precisionRefillable for later use: the wood processing mark is pre-filled with gray and comes with a reinforcement box which can cover your long-term needs of wooden working marks