The Power-Stud + Strength Design anchors are fully threaded, torque-controlled, wedge expansion anchors that are designed for consistent performance in cracked and un-cracked concrete. Suitable base materials include normal-weight concrete, structural sand-lightweight concrete and concrete over metal deck. The SD2 is manufactured with a zinc plated carbon steel body and stainless steel expansion clip for premium performance. The anchors are manufactured with a zinc plated carbon steel body and stainless steel expansion clip. This bulk pack contains 25 anchors. Thread length: 5-1/8 in, Diameter: 5/8 in, Length: 7 in