Experience ultimate writing precision with the Pentel 100C-2B Pencil Lead Refill 0.5mm Tube 12. Made with a superior hi-polymer blend of synthetic resin, graphite, and carbon, it creates a strong, flexible lead that's perfect for high-speed computer scanning. It's great for exam test scoring, with its resistance to breaking and no need for sharpening. Plus, it's made from 100% recycled content, making it a sustainable choice.