aluminum clipboard is treated with an antimicrobial agent that effectively reduces the formation of bacteria and fungi. High-capacity clip securely holds a stack of paper up to 1″ thick. Design features a built-in hanging hole, rounded corners and a finished surface. Clipboard is made of rugged aluminum with a high percentage of recycled material. larger quantity quotes available. Please call 1-888-978-7759. this product arrives to most customers in 2-3 business days.