Contractors and DIY plumbers, this is a time-saver. This is a bulk pack of 100 Sioux Chief stud guards. They're used to protect water supply lines (like PEX or copper) from drywall screws and nails when you're running pipes through wall studs or floor joists. These are the self-nailing type, made from 16-gauge steel, and they fit studs ranging from 3 inches to 5 inches wide. Instead of fumbling with screws, you just position the guard over your pipe where it passes through the stud, and hammer in the built-in nail tabs. Bam, it's secured and your pipe is safe from future punctures. It's a simple, inexpensive piece of insurance that meets building codes and prevents costly leaks down the road. The pack of 100 is perfect for a larger project or to keep on hand in your truck. Sioux Chief is a trusted name in plumbing supplies, so you know you're getting a quality, durable product. Keep your plumbing protected and your work up to code.