These open with one hand:
Yup. Do they make any quality blades? I used them a lot 30 something years ago, but they were all pretty cheesy.
Are you kidding?
That's a $350 Benchmade. D2. It's one of the best folders the company makes.
Nope...I had no idea. I'll damn sure study up on it. Last I knew, butterfly knives only came from Pakistani convenience stores.