I bought these to install some floating shelves after seeing my son use a similar brand for shelves in his rented house. They are easy to install, installation video on UTUBE. Seems to hold the shelf brackets but in reality I had 2 of the 25 that broke to begin with and the 2 screws supplied to mount them had slots for the Philips heads which were painted over and unusable hence 3 stars. Quite expensive as not everything was usable.