The Freeman 3 in. Single Concrete Drive Pins with Washers (100 Count) are designed for precision, performance, and durability. Ideal for fastening wood, steel, or other thin metal to concrete walls, cement blocks, and poured concrete slabs, these concrete drive pins provide exceptional holding power. Freeman concrete drive pins are the pinnacle of quality and value, and are made of galvanized steel to resist rust and corrosion. Perfect for indoor or outdoor construction projects, they deliver professional results and are compatible with single pin concrete nailers capable of driving Ramset and Hilti -style 3 in. drive pins -- such as the Freeman PE20VCNPN and PSSCP. Each box includes 100 concrete drive pins with washers attached to have plenty on hand around the house and jobsite.