With over 54 years of experience, Alvin is one of the primary sources for drafting supplies and drawing equipment in the country. Together with this core group of products, we continue to meet the needs our customers with our expanding range of fine art, hobby and craft supplies, our large selection of drawing room furniture, and our wide assortment of exclusively-designed products. Non-toxic vibrant water-based ink will not bleed through paper. Fine lines are perfect for small spaces and detail work. Durable bullet point fiber tip pens are in a handy reclosable carrying case for easy travel. Leak-proof airtight cap prevents dryout. AP certified by ACMI.