Great product, but begins to sag at full extension. Still safe, but required re-leveling of the tv with loosening a wing nut and adjusting it either by eye or with a level. Expect full extension to left or right to require adjustment when switching between. And, yes, we did bolt it to studs correctly it just has some play in the articulating parts - to be expected with anything of this level of motion and able to carry this type of weight
It's an amazing piece of machinery. I can turn a 50" TV sideways to see it out on my deck or in the dining room which are on opposite ends of the house I can also push it in straight so it looks just like a regular mounted TV. I also bought one for my office so i have a 50" TV as one of my computer monitors (I'm an animator) so I can see detail if needed. It's an excellent purchase, don't even think twice.