Avery marks-a-lot permanent marker, chisel tip, green ink, dozen permanent marker is designed to work on almost any surface including cardboard, metal and plastic. Works well both indoors or out. Durable 3/16″ chisel tip writes in a variety of line widths. Water resistant, low-odor ink, quick-drying ink & non-toxic. larger quantity quotes available. Please call 1-888-978-7759. this product arrives to most customers in 2-3 business days.