Paper Mate Biodegradeable 0.5mm Mechanical Pencils, 0.5mm, 12-Pack The first biodegradeable mechanical pencil from Paper Mate, with components that are biodegradable in your own backyard (components biodegrade in soil or home compost in about a year). Biodegradable components are made from corn, an annually renewable resource. #2 lead is perfect for standardized tests. Textured grip and pocket clip. 22% lower carbon footprint per pen vs. conventional plastic pens (a carbon reduction equivalent to turning off a CFL lightbulb for about two hours). Set of 12 0.5mm Mechanical Pencils Majority of components made from corn, an annually renewable resource 20% lower carbon footprint per pencil vs. conventional plastic pencils (carbon reduction equivalent to turning off a CFL light bulb for about 2 hours) #2 lead perfect for standardized tests 70.5g CO2 conventional plastic pencil; 56.7g CO2 Paper Mate Earth Write pencil The first ever Paper Mate Biodegradable mechanical pencil, with components biodegradable in your own backyard