Designed for robustness and reliability, these concrete screw anchors are ideal for securing materials to concrete, brick, or block. Crafted from durable carbon steel, each fastener in this 15-piece set features a flat head for a flush finish, providing a clean and professional look. With a 1/4 inch diameter and 2-1/4 inch length, they ensure strong and lasting stability for a wide range of indoor and outdoor projects.