Package: You will receive 1 Woodworking Mechanical Pencils, each with a small sharpener on top, 36 black lead refills (each 6 lead refills are packed in an individual box), in plenty of quantity meet your marking, drawing and woodworking needs. Solid 2.8mm Pencil refills: This work pencil comes with a 2.8mm thick lead core, which is thicker and stronger for clear and accurate marking during building work drawings, and is less likely to break or be damaged. Waterproof Material: These carpenter pencil lead refills are made of premium graphite, which has strong stability and high hardness. They are waterproof and moisture-proof. Even heavy rain can't wash the traces away. Built-in Pencil Sharpener,The sharpener screws onto the top of your mechanical drawing pencil, it won't get lost and your mechanical pencil will be sharpened with more precision. Deep-hole maker pencil: the deep-hole carpenter pencil designed with extended and needle-nose tip of 45mm in length, reaching hard-to-reach areas where other carpenter marker do not go, such as holes or in other tight gaps. Application: These pencil lead refills are widely applied for woodworking, building construction, artistic creation, design etc. The solid pencil refills can be draw on wood, metal, glass, ceramic tile, concrete, paper and such things.