Concrete Anchor Screw, Anchor Diameter 1/4 in, Overall Length 4 in, Head Type Hex, Drive Type External Hex, Material Steel, Finish Blue Ruspert, Material Grade/Class Case Hardened, Removable Removable, Compatible Material Block, Brick, Concrete, Wood, Drill Bit Size 3/16 in, Screw Anchor Type Concrete Screw Anchor, System of Measurement Inch, Tip Type Self-Tapping, Body Length 4 in, Package Quantity 100. This item has been restricted from sale in the following state (s): []