Set of 6 boxes of 6 replacement leads, in total 36 black refills.If you don't want to throw away your deep point pencil, let alone buy additional kits.These mines are your ideal choice.These leads can be used with a variety of strong carpentry pencils.Graphite Material: The carpenter pencil refill set is made of graphite, which features high hardness, long service life and is not easy to break.It is a good choice for your deep hole mechanical pencil.Lead Size: Pencil leads have a diameter of 2.8mm and a length of 120mm.Round carpenter pencil refills, suitable for long reach and deep hole pencils.[Portable packaging box] The drawer packaging cover can effectively protect the refill from damage.Easy to store and use.Press the plastic cover to remove the refill.The box has 6 grooves for each refill, convenient to remove the refill and effectively avoid refill breakage.[Widely used] Waterproof and durable leads for carpenter pencils.It can be clearly marked on the surface of wood, metal, cement, stone, paper, etc.Can be used in many places such as woodworking, construction, writing, drawing, sketching, building, etc.