[LingLing]

The one thing I did forget to include in my OP is that it also comes with an adapter for different shaped/sized retainers. I tried it both ways and using the included piece helps the valve sit more centered in the retainer making it easier to get the keepers in.

Goodhart, yes, it does work for the EVO's as well. Sure you can make something cheaper, but for the price and what you get, I feel it's well worth it.