With 50% more lead, Paper Mate Write Bros. Classic Mechanical Pencils help you spend more time writing and less time at the pencil sharpener. Meanwhile, a smudge-free eraser keeps your writing clean. Finally, the #2 pencil lead (0.7mm) makes these mechanical pencils ideal for standardized testing. They're great for fast-paced home, office, and school use! vs. lead volume of Bic Xtra Life mechanical pencil