These lead anchors can be used in solid masonry and concrete. They are ideal for shallow hole anchoring. These lead anchors come in a package of 100 and are used with wood screws. They have a screw size of numbers 10 to 12 to 14 x 1 1/2 inches. The anchor has a length of 1 1/2 inches. They have an ultimate tension of 1,000 pounds per 3,000 PSI and an ultimate shear of 575 pounds per 3,000 PSI.