Designed to keep lead sharp and ready to write! Rotating lead mechanism helps resist breakage. Maintains a continuous sharp point - perfect for intricate writing. Pencil comes with Nano-Diamond infused lead for added strength. Starter set includes a mechanical pencil, 10 lead refills and 2 eraser refills. Refillable with any 0.5mm lead. Uni-ball Pencils part of a large selection of office supplies. uni-ball(R) Kuru Toga Mechanical Pencil Starter Set, 0.5mm, Black is one of many Mechanical Pencils available through Office Depot. Made by Uni-ball.