1、RELIABLE MATERIALS: This solid carpenter pencil is mainly made of excellent heavy duty metal for the toughest jobs and will not break or come loose during construction 2、STURDY AND HANGABLE: With clip design, can easily suspend in your pocket, 2.8mm solid pencil refill is thicker and more sturdy, you can easily finish your drawing work 3、BEST DEEP HOLE MAKER: Deep hole woodworking pencil features an extended tip for easy access to hard to reach areas, ideal for marking through holes or other narrow areas 4、BUILT IN SHARPENER: This mechanical woodworking pencil comes with a sharpener on the top of the pencil, so there is no need to buy a separate sharpener and you won't lose. Can keep the pencil incisive and accurate at all times, easy to use 5、MARKING ON VARIOUS SURFACES: These sturdy mechanical carpenter pencils can be used to draw on metal, plastic, glass, wood, paper, etc.; different colored refills allow us to mark on different materials; Favored by contractors, DIYers, artisans, builders, merchants and masons