Tie-wire anchor is a wedge-style expansion anchor for use in normal-weight concrete or in concrete over steel deck. With a tri-segmented, dual-embossed clip, the tie-wire anchor is ideal for the installation of acoustic ceiling grid and is easily set with the claw of a hammer. Wedge anchors are a unique type of concrete anchors, designed to anchor objects into concrete applications. Concrete Wedge Anchors are installed into a pre-drilled hole using the appropriate concrete drill bit, where the wedge is expanded by tightening the nut. Once installed, wedge anchors are not removable after the anchor has expanded. Wedge Anchors are also called by other names such as stud anchors, concrete stud anchors, concrete bolts and wedge bolts. Wedge anchors are a non-bottom bearing anchor for use in solid concrete or grout-filled concrete. They come in an variety of diameters and lengths, with material options including Zinc Wedge Anchors, Galvanized Steel Wedge Anchors.