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. Over-the-door double hook fits over 1-3/4 thick doors. Rounded knobs protect fabrics. The large top hook is ideal for coats and sweaters. The small bottom hook holds purses hangers or umbrellas. Double hook is made of durable plastic with a metal back plate for added strength.