It was a nice idea.... screw the sleeve on the tree while it's laying on the ground. If you screw it on crooked, no worries. Then pick it up carry it over the base and drop it in. Press the pedal to swivel the base until the tree is straight, and release the pedal.
It does make it possible for a person to set up a tree by themselves, but it didn't seem to work out quite this nice. First of all, the screw tips are pointed, and thus dug into the trunk when tightened. They didn't seem to be able to get the kind of purchase that larger flat tips would. Also, there are only 3 screws to hold the tree (other stands have 4 or 5). Also, there are no spikes in the bottom of the sleeve to secure the base of the trunk, like with other designs. All of these combined to make the tree rather insecure. This insecure hold combined with a little bit of play between the sleeve and the swivel base, and a little bit of play between the swivel base on the bottom base resulted in a significant amount of play that made a tedious trial-and-error process of trying to straighten the tree.
My biggest grievance is that it broke on it's 3rd season of use. When tightening one of the screws the plastic that houses it cracked and broke off (definately can't hold the tree up with the 2 remaining screws). It surely wasn't a case of overtightening, since the small screw knobs don't let you generate enough torque in the first place. This was only a 6' tree.
I replaced it with a Cinco, and am thrilled with it. It addresses all of the above issues. Super stable, super rugged, half the price. Simple design, but setting up the tree took a fraction of the time.