Have this PRO-FIT 1-1/2 in. (4D) Brite Cut Masonry Nail delivered onsite. Coating: Bright finish for interior use. Code: Aligns to ASTM F1667, as applicable. Applications: Designed for attaching wood to cinder block, mortar joints, brick walls, and fresh concrete. Head Style: A cut flat head offers a large striking surface for easy drive connection. Shank Style: Tapered shank offers greater pull out resistance. Point Type: Blunt point minimizes concrete splitting. Nail Design: 4-sided design provides an abundance of surface area for exceptional holding power. Using Masonry Nails: Wide side of the nail should always be driven parallel to the grain of the wood. Length: Nails are 1-1/2 in.