Jumbo coils are manufactured in a flat coil with a plastic axle and paper cover. On smaller Jumbo coils the cover and axle are not used. Jumbo coil nails are used in automatic pallet forging machines. In such coils the number of nails may range from 450 to 3000 nails per coil. These nails are designed to be used with a pneumatic nail gun and come in long, coiled strips that can hold up to 3000 nails.