Concrete strike anchors are available for sale online for a wide range of prices. Prices are determined by the size of the anchor as well as the quantity of boxes needed. Prices for strike anchors range from $27.25 for a box of 25 1/2" x 4-3/4" to $62.00 for a box of 100 5/16" by 4" anchors. The drive pin of these concrete fasteners is hardened steel. It is also important to determine the right size carbide bit that should be used during installation. These carbide bits can also be purchased at Concrete Fasteners.com.