Replacement for Simpson S12A200T31 These Round Head (Offset Head) Strip Nails are 34 degree paper collated, 2" length made of .113" (12 gauge) RING shank 304 Grade Stainless Steel. Use 304 Grade Stainless for outdoor applications to avoid nail corrosion and discoloration. Recommended for ACQ treated lumber, cedar and redwood. Ring shank nails, also known as annular thread, offer superior holding power and helps prevent nails from backing out over time. Compatible with 30-34 degree angle framing nailers including Senco SN series and Paslode Impulse. Each box contains approximately 1,000 nails.Applications Include:Light framing, decking, siding, fencing, wood shakes, fiberglass shingles for both new roofs and reroofing, cementitious fiber board products, box and crate assembly.Disclaimer:• Product brand subject to change based on availability.• Country of origin subject to change based on availability.