The Abus Ultra 410 U-Lock shows how security works with Abus quality. There is no way around this U-lock. Its solid shackle made of hardened special steel, with a diameter of twelve millimetres, withstands all sorts of attacks. The solid lock body is also made of steel and contributes to the protection of your bike with its high-quality locking cylinder.Abus Ultra 410 U-Lock FeaturesHardened 12mm round shackleThe shackle, body and the structural parts of the locking mechanism are made of specially hardened steelThe special, modern design of the lock body casing allows for optimum handlingHigh-quality locking cylinder for a high level of protection against tampering, e.g. pickingGood protection at medium theft riskThe longer the shackle, the easier the bicycle can be locked to a fixed object More info