B&C Eagle 314X131RSS/22 Round Head 3-1/4-Inch x .131 x 22 Degree S304 Stainless Steel Ring Shank Plastic Collated Framing Nails (1,000 per box) For use in 20 to 22 degree plastic collation framing nailers Plastic collated ring shank S304 Stainless steel won't ever corrode or rust. For interior and exterior use. Rated for use in treated lumber Full round head New and improved packaging helps protect product during shipment