These anchors are your go-to for suspending conduit, lighting, and pipe overhead in concrete. All have an internal plug that expands in four directions to create a tight grip before inserting a threaded rod or bolt. Since the grip is focused at the base, these anchors are best suited for concrete, which can handle the gripping pressure better than softer block and brick. They’re also known as drop-in anchors.

To install, place the anchor into the hole, insert the required installation tool (sold separately), and drive with a hammer until the shoulder of the tool contacts the anchor. All create a permanent female-threaded connection that lets you remove and reinstall a screw or threaded rod.