MakerFlo Lead Pencil Refills Brand: Makerflo Quantity: 12 Packs of 24 Leads Each (288 total lead pieces) Material: Graphite Size: 0.7 MM * Includes total 288 lead pieces, 0.7 mm HB refill is 60 mm long * Each pack of 24 comes in a compact plastic case with a blue removable lid * Universal size usually applied to most mechanical pencils * Suitable for all general writing applications such as notes, letters, and you can use it for office, classroom, home and other occasions