The Hillman Group 372164 Wedge-Bolt Anchor, 3/8 x 4-Inch, 25-Pack

The Wedge Bolt+ anchor is a Building Code Approved one-piece, heavy duty screw anchor with a finished hex head. It is simple to install, easy to identify and fully removable. The patented steel threads tap into the hole providing strong loads. The anchor is designed for structural loading in cracked and untracked concrete. Wedge Bolts are designed to fit standard fixture holes. For proper performance, use a Wedge Bit.