Uni-Ball Kuru Toga M5-450T Self-Sharpening Mechanical Pencil. Premium Propelling Ultra Strong Diamond Infused Leads for Technical Drawing, Writing, Arts and Crafts & 12 Lead Refills. Fine 0.5mm
- Gear mechanism rotates the lead so tip remains cone-shaped.
- 40 touches will result in one complete rotation of the lead.
- Features a replaceable eraser under its push button.