"I bought a batch of 10 of these as they look nice and neat for some bedroom shelving. They come with screws and rawl plugs for fixing to the walls. They are adjustable for different thicknesses of shelf using a long threaded set screw and have plastic inserts that clamp against the wood to protect it - all good so far. However, I found the following problems. The plastic inserts are loose so they fall out easily while putting them up. The screws supplied are too big for the holes in the brackets and I had to switch them for smaller screws that would fit. The adjustment screw runs very close to the main body of the bracket and in some case interferes with the bracket and jams - one of them arrived locked solid and I couldn't use it. Next time I'll look for alternatives."