Sorry. Gonna call bullsh1t on these reviews and on this product.
I got mine in today; and I don't have to even install it to realize this product is not "precision".
Sure; they are precision CNCed. But that's where the precision ends.
These are nothing more than Aluminum Flipper bats that have been on the market before.
There nothing special about this kit. No extra parts - nothing which makes them more accurate.
https://www.pinballnews.com/site/2018/03/07/adpin-flippers-2/
You get a top bat, A stainless steel "shaft", a #10-32 stainless steel screw to secure the bat to the shaft, and a reverse clamp to remove the bat from the shaft in the future.
You don't replace anything but the bats and shafts; so no way can this be a more precise pinball experience. The "triangular" shaft top is knurled so it "bites" against the aluminum flipper bat. The shaft was done (I'm guessing) with stainless steel so it would actually bite into the aluminum. This is why you have to have a reverse clamping system to remove the bat in the future. I imagine eventually; this knurling will deform the aluminum so don't expect to get many install/reinstall cycles.
They are pretty and look cool; but seriously - nothing here screams precision or anything more than a standard bat. IMHO: certainly NOT worth 65/set of two.
Edit: I did NOT order the aluminum bushing as I'm a firm believer if it ain't broke; don't fix it. Nothing wrong with the plastic bushings... and I doubt metal bushings really provide a justified benefit to the player when combined with the risk of a gummy situation when the lubed metal on metal action attracts dust from the rest of the machine.
My advise- they look cool. If you like the look of the product; then by all means enjoy it.
But don't buy this "system" for the marketing wank that is clearly part of their store.