Triggerwood pens are refillable pens made from sustained yield scrap wood (white birch), brass, black oxide steel, and nontoxic ink (ethyl alcohol, in longer lasting brass cartridges). These pens are retractable and match the mechanical pencils. No animal by-products. Medium point. Sold individually. Refills available. Eco Categories: Sustainable ag, biodegradable (barrel), reuse, long life, less toxic, animal friendly.