This thing is HEAVY...at 2 lbs!  I'd been using a DIY practice hockey puck drilled with a heavy knob on it before this-people getting $100, $200, or more for a billet or brushed aluminum one to me is absurd...This thing at @ $40 is stable and low profile enough to fit under a closed dust cover on just about any turntable I would think worthy enough to use it on. I defer to those who would use it on a belt or idler motor table to say if it is too much, but for a direct drive table that would benefit most from what it offers I don't think there's a better deal unless you DIY. If it had a bubble level built in I'd give it 5-stars