Triggerwood pencils are mechanical pencils made from sustained yield scrap wood (white birch) and black oxide steel. These pencils use .5 mm lead and match the Triggerwood pens. No animal by-products. Sold individually. Lead refills available. Unfortunately, this pencil does not have an eraser. Eco Categories: Sustainable ag, biodegradable (barrel), reuse, long life, less toxic, animal friendly.