Simpson Swan Secure S13A250SNBP wire weld Coil Siding nails are guaranteed to exceed T-304 stainless steel requirements. These nails offer the ultimate corrosion resistance for use in all high quality siding, roofing, decking and trim boards. Sturdy re-sealable tubes packaging reduce damage and waste. These nails will fit in Hitachi, Max, Makita and other similar 15-Degree siding nailers.