Product review (5 stars): Quick, easy and it works
I bought these brackets at Lowe's to secure my dishwasher to the underside of a granite countertop.  The dishwasher was unsecured and constantly tipped over when open with the racks pulled out.  I am very glad I listened to other people's advice to NOT drill into the undersurface of the granite (very expensive when you screw it up!)  These brackets were extremely easy to install.  You simply screw them into the top clips of the dishwasher. Then, you peel back the red tape to expose the binding agent. After that, you push the clips hard into the underside of the counter for 30 seconds. They say to clamp for 5 more minutes but I just pushed hard with my hands (if you use a clamp, make sure you don't tighten the clamp directly on top of the counter (put a small piece of wood or even a cutting board between the clamp and the granite to protect it).

On my dishwasher, the top clips had three screw holes each. I put these brackets into the middle hole on each side before peeling back the red tape and attaching. Then, after attachment, I could still adjust a little forward or a little back by changing which clip hole the brackets were screwed into.

VERY EASY AND WORKS GREAT!  ROCK SOLID.