Product review (5 stars): Perfect solution
This worked perfect for new cabinet installation where quartz counter top was installed. It definitely is handy to solve the problem when you can't screw into counter top like with quartz or granite. This can be screwed onto top of cabinet before counter top is installed as we did or ends bent on 90s and screwed to cabinets. It comes with all hardware needed and the sheet metal screws provided do tighten securely when installing dishwasher.  It is recommended in instructions to apply silicone caulk to middle of bracket to counter top. Unfortunately when counter top installers installed counter top they did not caulk as per my note. The good thing is the bracket is rigid enough it wasn't an issue.