Maze 8d x 2-1/2 In. Hardened Steel Masonry Nails, 320-Count are specially designed for a variety of masonry applications, making them an essential tool for attaching wooden items to cinder block walls and fresh concrete surfaces. These nails feature a blunt point and a tapered shank, which help reduce the risk of spalling or chipping during penetration while also providing superior resistance to pull-out forces d to traditional wire masonry nails. For results, a penetration depth of 3/4" should be followed. When using these hardened steel nails, it is important to wear safety glasses to protect against flying debris caused by driving nails into hard surfaces. Durable and reliable, these masonry nails are a practical choice for any masonry-related project. Model Number: CMH8530