The SITLDY 21 Degree Framing Nails is a durable and versatile product that is perfect for framing tasks. Constructed from full-round head, hot dipped galvanized steel, these nails offer superior strength and durability, making them suitable for a wide range of applications. With a ring shank for multiple use and a smooth shank for nailing directly into wood, these nails are incredibly versatile. The 4 sizes (2"+2-1/2"+3.0") included in the pack, which can be used interchangeably, provide flexibility and efficiency during framing tasks. The set of 100 nails per size and 400 nails in total ensures that you have enough nails to complete any framing project, no matter its size or scope. The SITLDY 21 Degree Framing Nails are ideally suited for framing nails, making them a must-have tool for any framing professional or DIY enthusiast.