WEDGE ANCHOR 1/2X2.75B12 The Power-Stud+ SD1 is a fully threaded, torque controlled wedge expansion anchor that is designed for concrete applications. Suitable base materials are normal and light weight sand concrete, concrete on steel deck and grout concrete masonry. This anchor has several DOT approvals, including Caltrans listing for “Mechanical Expansion Bolt Anchors.” Building code approved. * Brand Name: Hillman Diameter: 1/2 in. Length: 2-3/4 inches. Material: Steel Head Style: Round Head Product Type: Wedge Number of Anchors in Package: 12 Packs Screw Included: Yes Packaging Type: Box Thread Type: High/Low Drill Hole Size Required: 1/2 in. Screw length: 2-3/4 inches. Minimum embedment: 2-1/4 in. Capacity: 1390 lb Application: Concrete