Turbo Coil is bigger, stronger, and faster than your average coil. Specifically designed to make binding large books easier, Turbo Coil increases your productivity and profitability when it comes to binding notoriously difficult big books. Offered in a number of great colors, Turbo Coil is available in sizes ranging from 20mm (3/4") to 50mm (2") in diameter. Turbo Coil is also manufactured phthalate and lead free. Receive 100 12-inch long pieces with every order. Use the drop-down menus above to select your size and color.