Compact and lightweight compared to chain type. I bought it for theft prevention at the time of long touring (including camp). Because I have three spare keys, I always have two to go for a lost bag. I think that it is a commodity more than the price.
The locking shaft was too big for the motorcycle rotor I used this time, so I used it on another motorcycle. It is not bad if you win, but it seems a bit heavy, so if you purchase for deterrence purposes we recommend a small mini that is a little smaller. Also, I think that if you embed a blinking LED etc on the part of the arm that is useless, the deterrent effect will increase.