The DEWALT 06320-PWR Steel Drop-In expansion anchor is an all-steel, internally threaded anchor designed for use in solid concrete and other suitable masonry base materials. This smooth wall drop-in anchor features a 5/8-11 coarse internal thread and a 2-1/2 in overall length, allowing flush or below-surface installation for serviceable anchoring. It is commonly used for suspending conduit, fire sprinklers, cable trays, struts, concrete formwork, pipe supports, and suspended lighting. The pack contains 25 anchors.