I installed 2 Fischer plastic plugs 8x40 with screws 5x40 on a brick wall and they hold very well. It has a total of 4 holes, but I found it unnecessary.

Solid construction, relatively discreet on the wall, a bit difficult to hang the bike if there is a wall on the side of the hook, but the problem is the hanging strength: in the five years that I have it, it has fallen twice - the hooks simply came off the wall and the bike fell down, luckily without any damage. I don't know if I will screw the base again for a third time, I will probably go for something else...