WRITES ON WOOD, METAL, BUT ALSO CONCRETE AND TILES: Do you have trouble tracing on concrete and metal? Writing on a dark surface is no longer a problem thanks to the yellow leads provided with the construction pencil! What's more, the leads provided are 2B, meaning they are bold enough to trace everywhere and more solid than dry leads. This makes it the ideal construction pencil for carpenters, joiners, masons, etc., but also for all other disciplines! THE MOST PRACTICAL TRACER FOR CONSTRUCTION SITES: even more practical than the Pica Dry because it doesn't have a sheath. So you won't lose it, and it attaches directly to your pocket thanks to its quick and solid clip. And to sharpen the lead? No problem, the sharpener is screwed into the top of the mechanical pencil. So it won't get lost either, and your lead will always be well-sharpened for top precision! ERGONOMICS AND OPTIMAL GRIP: Compared to traditional pencils, this mechanical pencil is ergonomic. It has been designed to fit the shape of the hand thanks to a larger diameter to improve grip. This way, the carpenter's pencil won't slip from your fingers, and repeated tracing causes less pain. Not to mention its scribing tip and its clip for quickly gripping it in your pocket. Be more efficient with this great construction pencil for carpenters! Refill diameter: 2.8 mm Nose tip diameter: 5.0 mm Tip length: 1.7 inches/ 4.3 cm Pen length: 5.7 inches/ 14.5 cm Attribute: vertir