I confirm the previous comment: this is a good basic tool but lacks a bit of stiffness. For 29-inch wheels, I confirm that it works, even with a big tire. Another advantage of this product: the veil of adjustment points are located on the 2 sides, so when we want to center a wheel, simply move to either side of the wheel by counting the number of turns of the screw: it n is not absolutely accurate but it helps to do without a centering ... A compact stowed is another major asset.
For that price, it's a good tool (other tools more "pro" exist but the price is not the same ...)