so inside the carbon steel frame is a hollow chamber, and inside of that is a pressurised gas. according to the creators, if you cut about 30% of the way inside, the gas should spray out and the sheer stench alone should be enough to send any criminals running. so, let's put that to the test. saw buzzes. that smells pretty disgusting. it does absolutely stink. coughs. i'm not sure whether that would send me running, but i think i am changing my mind every second. the problem with the lock is, any part of your bike that isn't still locked up, you know, like if the front wheel wasn't locked up as well, then that's not going to be kept safe by that lock. and, coughs, the gas isn't refillable, so once you've cut through that one time, you're going to need to get yourself a complete another lock.