Ouch, it's tight! - RE Factor Tactical RATS Rapid Application Tourniquet System

I bought 2 of these for EDC (that's every day carry for you non-tacticool people). I put one in my ruck. Now, I must be honest; I haven't had the opportunity to actually use this tourniquet for its intended purpose, thank god, but I tried it on my upper arm and holy bat gonads, it hurts! Wowee! I bet it'll hurt even more if I have a huge gash in my arm with blood pouring out, but once this bad boy (in Ranger green - RLTW!) is in place, no blood will dare leave my UFC fighter-like body. Seriously, though, these tourniquets seem well made and very capable. Buy some!