I Was Given 20 Free Hard Drives... Here's What I Found

In this video, I test out 20 hard drives I got for free! Are they still usable, or are they just e-waste? In this video I pretty much just look at all of them and see which ones work and which ones don't. They way I got them is from a guy I know who takes them out of old computers/laptops. or just finds them in general.