Description Wedge anchors are designed to anchor objects into concrete. They are installed into a pre-drilled hole, then the wedge is expanded by tightening the nut to securely anchor into the concrete. They are not removable after the anchor is expanded. The anchor is manufactured with zinc-plated carbon / stainless steel and an expansion clip, nuts and washers are included. Specification Size: M 6 - M24 / 1 / 4 â?? - 1 â?? Length : 50mm -300mm Material : Carbon Steel/ Stainless Steel Finishing : YZP / WZP / HDG Customized : Yes