Grip-Rite GR034HG Round Head 3-1/4-Inch by .131-Inch by 21 Degree Paper Collated Hot-Dip-Galvanized Framing Nail (4,000 per Box) 16d 'Short' 3-1/4" x .131" - Vinyl Coated, 21 Full Round Head Smooth Shank, HOT-DIPPED GALVANIZED, Plastic Collated Strip Nails Sturdy Cardboard Carton with Bi-Lingual (English-Spanish) Color-coded Label Use with Grip-Rite GRTRH350 - 21 Full Round Head Framing Nailer 4000 Nails Per Carton