Paslode Coil Fuel + Nail Packs include the exact number of fuel cells needed to fire all the nails in the pack. Paslode steel siding nails are constructed from durable steel material. Paslode 0-Degree Coil Siding nails are collated with strong, flexible plastic to provide durability. The nail heads are consistently on center to help reduce jamming and promote easy drivability.