Blackhawk BH108D 10g x 50 SS316 T20 Speed Drive Decking Screw is a corrosion-resistant decking screw crafted from 316SS Stainless Steel, making it perfect for use in harsh environments, such as coastal areas. the TX20 drive and TRS thread provide secure fastening, while the high-quality Stainless Steel ensures durability and long-term performance.