The Blue Hawk 1/4"× 1" Masonary Drive in Nail Anchors come in a pack of 66 open package nails. These flat head anchors are 1 inch long with a 1/4" diameter thread size, making them suitable for various home improvement and building projects. Manufactured in China by Blue Hawk, these nail anchors provide a secure fastening solution for materials like concrete, brick, and stone. Ideal for DIY enthusiasts and professionals alike, these anchors offer a reliable way to anchor items in place with ease.