I'm installing a handrail for a short flight of stairs at the bottom of an interior staircase which is adjacent to a solid concrete block wall.
The options I've been considering for fixing the handrail brackets to the wall include countersunk sleeve anchors and concrete screws.
I was thinking sleeve anchors would be more secure but there's only a very limited range of sleeve anchor sizes with the smallest being 6mm so I'm not sure if I would be able to find a handrail bracket with screw holes to match.
Another potential problem with using sleeve anchors is that they have to be spaced a minimum distance apart although there are handrail brackets with a single screw hole.