BOSTITCH C4R80BDG Thickcoat Round Head 1-1/2-Inch by .080-Inch by 15 Degree Ring Shank Coil Sliding Nail (4,200 per Box) 1 1/2" x .080 Ring Shank Thickcoat Galvanized Finish 4200 Nails Per Box For Use in the Bostitch N66C-1 Industrial Siding Nailer