I have an IKEA bracket set with shelf which has been sitting around the house for an eternity not put up. The reason I have put it off for so long is because it didn't come with screws. Now I have decided to put it up I am very unsure what length screws to use.
This is the bracket. The wood is about a centimetre and a half thick. So what length screw do I need to securely fasten it to the wall. I am not going to put anything seriously heavy on it other than maybe a few books.
P.s I do have a spirit level so don't worry about that