Contents: 1 x Single Airbrick Cover, 2 x Anchor Plugs, 2 x T Handle Screws, 2 x Anti Loss Washers, Tools required to assemble: Hammer, 7mm Masonary Bit, 4mm Parallel Pin Punch, Power Drill, BSI Kitemark licensed product (KM563624) passed the rigorous testing criteria of PAS 1188-1:2009, Available in single & double sizes, Fits any standard single air brick, Takes minutes to install after first application, Easy to deploy & compact to store, Used by Local Councils & the Environment Agency