Pencil Lead Pointer for 2mm and 3.15mm Lead w/ Sand Paper & Sponge Pencil-tip Cleaner Specially hardened blades. Includes 2 spare blades, sand paper and sponge pencil-tip cleaner. Lead Pointer for 2mm and 3.15mm lead. Dynamic Torsion Action keeps the high-carbon steel blade under positive tension during the sharpening process.