Review on Enhanced Performance of Medium Duty Aluminum Turntable with Single Row Bearings by David Dreher

Seemed to be solid quality construction but the 'medium duty' version was not suited for use on a granite countertop. The supported platform slid across the stone surface instead of rotating. If this thing had a 100 pound load it might turn in place, but definitely not for the much smaller loads you might have on a dining table. In other words, when you start spinning this thing, it won't keep spinning after you let go and "rolled out" 1/4 turn - it stops immediately due to the large amount of friction.