Deep Hole Maker: The deep hole carpenter pencil designed with an elongated tip and 45mm tip length, reaching hard to reach areas where other carpenter markers won't go, suitable compatible marking through holes or in other narrow areas Built-in pencil sharpener compatible precise marks: the pencil sharpener is screwed into the top of mechanical drawing pencils, which also won't get lost and your mechanical pencil will always be sharp compatible fine precision Mechanical Pencil : the carpenter's pencil does not slip out of the fingers and repetitive drawing causes less pain; Pen clip design can be easily attached to the pocket, easy to use and not easy to lose, gaining efficiency, suitable compatible construction and masons Marks on various surfaces: strong carpenter pencil can draw on metal, plastic, glass, wood, paper, etc. Drawing pencil leads are durable, they are greasy to trace everywhere and stronger than hard lead; Yellow can be drawn on dark surfaces where gray lead won't draw Rechargeable compatible continuous use: the woodworking marker comes pre-filled with a yellow lead, comes with a refill box included 3 gray leads and 3 yellow threads that can meet your long term wood marking needs Two color refills They come in a box. Use yellow pencils compatible dark surfaces and gray pencils compatible light surfaces. Built-in sharpener It is screwed into the top of the pencil, which is not easily lost. It is convenient to sharpen your pencil whenever you want. More Thoughtful Details Non-slip handle is labor-saving. The pen clip can be easily attached to the pocket, which is not easy to lose. Delivery Quantity: 1 set lucky meet