Why aren't the wings of my Gripit opening?

If you can't see an opening in the cavity, firstly check you have drilled the whole way through the plasterboard. Otherwise, It may be that you have hit an obstruction (e.g a dab of plasterboard adhesive).

To fit the Gripit into dot & dab you will need to use one of our undercutting tools to create a recess in the adhesive which will allow the wings to open.