Paper Mate Earth Write 0.7mm Mechanical Pencil Starter Set, 2 Mechanical Pencils (1757552) 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 Starter Set contains two 0.7mm Mechanical Pencils, 12 replacement leads and 5 replacement erasers 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 Starter Set contains two 0.7mm Mechanical Pencils, 12 replacement leads and 5 replacement erasers The first ever Paper Mate Biodegradable mechanical pencil, with components biodegradable in your own backyard