Package Included: 3pcs x Concrete Wedge Anchor Expansion Bolt Wedge Anchor is made of 304 stainless steel,not rust and can be long time used.Wedge Anchor Bolts is packaged with nuts and washers, can be more faster, quickly and completely installationAnchor Size: M8 x 70mm/5/16" x 2.76"(D*L), M8 x 75mm/5/16" x 2.95"(D*L), M8 x 90mm/5/16" x 3.54"(D*L)Wedge Anchor Expansion Bolt commonly used in