Grip-Rite 114EGRFG1 1-1/4 in. x 11-Gauge Electrogalvanized Flat Head Smooth Shank Roofing Nails are designed to attach various roofing products onto exterior surfaces. Zinc-coated to resist rust and corrosion, the sharp diamond tip makes installation a cinch! Designed with smooth shank for easy driving, the wide flat head reduces pull-through.