Works exactly as described. Be careful and be sure to use the transition blocks while driving onto plates. Do not be abrupt in any way or these plates may be damaged or ruined. One note. The protractor cannot be read while the tire is centered on the plate. There needs to be a solution to this. The digits are not readable when the tire is actually centered. My tires are 225/65/18, fyi. So not too big or wide. The bearings make the wheels very easy to turn, such that I could move the wheels through the arc of turning by hand without engine running. Very impressive. My old greased up plastic plastic “plates” were not remotely as useful. Caster was easy to find using these plates, although a helper is necessary to note when wheel is at 20 degrees either direction as steering wants to return somewhat from that point when you let go of the steering wheel. What would be killer would be a digital gauge to follow a pointer you select such that when the wheel reaches the desired angle, it beeps once, and when you steer the opposite way to that desired angle it beeps twice and gives you your caster angle. That would sell more quickly, guaranteed. And if you made that, I would return these and buy that. Hint. Hint.