The Abus Ketaro 505 Lock gives you the protection of a U lock, with over a century of German precision to back it up. It's treated with a soft surface coating, which protects the paint on your bike, in addition to making it easier to handle. The Abus Plus cylinder adds protection against being picked. And the 13mm, double bolted, hardened steel shackle will fend off most hand tools. While it's not impervious to power tools because frankly, no lock that we're aware of truly is it's a high security option for keeping possession of your ride. The Abus Ketaro 505 Lock is available in one size and in the color Black.