Nail Drive Anchor, 1/4" Dia., 3" L, Steel Zinc Plated, 100 PK, Midwest Fastener, Mfr#: 09193

Also known as a hammer drive anchor, a drive anchor is an anchor with a nail-shaped pin enclosed in a sleeve. Once the pin is struck, the anchor expands into concrete, brick or block. These anchors are best suited for light duty fastening.