1/4" x 4" Aggre-Gator Bi-Metal Concrete & Masonry Fasteners, Hex Washer Head, 5/16" Drive Size, 3/16" Drill Bit Size, 304 Stainless Steel Bi-Metal with Stalgard GB Coating

The Aggre-Gator® anchor is a Bi-Metal screw anchor for light to medium duty applications in concrete and masonry block base materials. The Aggre-Gator® is fast and easy to install and provides a neat, finished appearance. Aggre-Gator® anchors provide unmatched corrosion resistance in demanding applications, such as those in coastal or wet areas.