The Power-Stud+ SD1 anchor is a fully threaded, torque-controlled, wedge expansion anchor which is designed for consistent performance in cracked and uncracked concrete. Suitable base materials include normal-weight concrete, lightweight concrete, and concrete over steel deck. The anchor is manufactured with a zinc-plated carbon steel body and expansion clip. It can be installed through standard fixture holes and the design allows for follow-up expansion after setting under tensile loading. Powers Fasteners.