The Trelock U4 Mini 150mm U-Lock is rated as Sold Secure Bronze. This makes it absolutely ideal to be used in lower risk areas or for use as a second lock. The small size of the U4 Mini makes it absolutely ideal for slipping into a bag but it also comes with a universal bracket for mounting it to your bike. Mini locks are great for locking your bike to bike stands but don’t give loads of room if you are locking your bike in lots of different spots. The short length of the U4 Mini acts as a defence against some common leverage attacks. it also comes with a high security disc-style cylinder lock which is pick & drill resistant. Trelock are a relatively new brand to the UK but they have been making bicycle accessories in Germany for 160 years. Trelock make high quality & reliable locks & are part of the same global group as Kryptonite. Features High security disc-style cylinder is pick & drill resistant dust cover stops dirt blocking the keyhole shackle length 15.2cm shackle diameter 14mm protective vinyl coating replacement key service comes with universal mounting bracket sold secure bronze rated 4/6 on Trelock S security scale