[Study Refill Leads]The pencil refill replacement is made of graphite which features smooth, high hardness, long lasting usage and not easy to break, will be a good choice for your deep hole mechanical pencil.[Wide Application]The waterproof and durable carpenter pencil refills can be used in many like woodworking, construction, writing, drawing, sketches, constructions and so on.[Portable Packaging Box]Push the plastic cover to remove the refill, has 6 grooves for each refill, convenient for you to remove refill and effectively avoid refill breakage.[Fits for ]The standard 2.8mm round refills replacement fit for Hiboom carpenter pencil as as other mechanical pencil holder.[What You Will Receive]4 packs x 6 refills, you will receive 24 pieces pencil refills;Material:graphitecolour:blackPackage Contents:24 * pencil refillsOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.