Product Details:Color: SilverMaterial: 304 Stainless SteelSurface treatment: Washing WhiteThread diameter: 12.7mm/0.5"Total length: 115mm/4.53"Minimum thread length: 70mm/2.76"Outer diameter of gasket: 27mm/1.06"Pre-drilled hole diameter: 1/2"Installation torque: 40Ft/LbsPackage Content: 10pcs x Wedge AnchorsMaterial - Our concrete wedge expansion tube is made of carbon steel material, which has excellent stability and reliability, and can perform excellent rust and corrosion prevention even in harsh conditions. It is very sturdy and durable, and will not bend during long-term use.Feature - Our concrete wedge anchors features wedge-shaped and cylindrical designs, with a delicate appearance. The cylindrical design makes the expansion tube more stable, easy to install, and versatile.