The Kendall Howard Wedge Anchor Kit – 3/8” x 3” works withboth wall mount and floor mount products that are being installed into aconcrete surface. Four anchors are included with this kit to make mountingproducts, such as our 2-Post Relay Rack or 4-Post Adjustable Rackto the floor, a breeze. To install, use a 3/8” drill bit to create a hole (atleast 1 ½” deep) in a concrete surface. Next, use a hammer to install the wedgeanchor; and finally tighten the nut with a wrench. In just a few easy steps,your products will be securely mounted to any concrete surface with the WedgeAnchor Kit.