Stainless steel with ring shank FF NFP 63x3.1mm Ring SS304 + 1 fuel cell, The professional range of nail-gas cartridge-packs (NFP) is perfect for the roofing and construction industry. The nails are available in lengths 51 - 90 mm and guarantee maximum durability and ease of use for wood-to-wood connections. The 34-degree framing nails with high-quality waxed paper collation and the corrosion resistance that exceeds Eurocode 5 standard ensure safe working. More than 1, 100 nails can be set per gas cartridge which remains functional down to -15C. In addition, the range is compatible with all available clipped head framing nailers.