The DEWALT 02808-PWR Zamac Nailin mushroom head hammer drive anchor is a light-duty, tamper-resistant fastening solution for concrete, block, brick, masonry, and stone. It features a corrosion-resistant Zamac alloy anchor body with a carbon steel nail and a mushroom head design for general purpose anchoring. This 1/4 in diameter by 1 in long anchor installs in a variety of base materials and is suitable for roof flashing, mechanical attachments, brick ties and masonry anchorage, furring strips, electrical fixtures, and maintenance applications. The pack contains 100 anchors.