With this kit, you can confidently secure shelf brackets to a plasterboard wall safe in the knowledge they will support up to 74kg. Gripit is a unique method of fixing an item to a plasterboard wall. Gripit fixings distribute the load over a much wider area compared to conventional fixings or plugs. Gripit is one of the strongest plasterboard fixings available. The Gripit Shelf Kit contains 4 x Gripit red plasterboard fixings, 4 x 5 x 30mm screws and a Gripit 18mm flat bit.