I used this item to mount a 46" TV to my family room wall. The mount is made of a very good low gauge (i.e. thick) steel and came with multiple bolts, washers, etc. for multiple mounting scenarios. The instructions were easy to follow. I did purchase two additional anchors that go in drywall only (to be extra safe) as only two of your three sets of mounting screws will hit wall studs.
The downside to the mount is that the internal bubble level may not be accurate. I utilized the bubble at first but noticed the mount seemed off prior to final installation. After confirming with two other bubble levels, I found that the level on the actual mount was not accurate. You may have better luck with your mount's level, but the rule "measure twice and cut once" can certainly apply with leveling before drilling holes into your wall.