B&C Eagle 312X131HD/22B Round Head 3-1/2-Inch x .131 x 22 Degree Hot Dip Galvanized Smooth Shank Plastic Collated Framing Nails (4,000 per box) For use in 20 to 22 degree plastic collation framing nailers Plastic collated smooth shank Hot dip galvanized coating resists corrosion and rust. For interior and exterior use. Rated for use in treated lumber Full round head New and improved packaging helps protect product during shipment