SMALL AND ROBUSTThe Ultra Mini 410 U-Lock is compact and combines high-quality materials with intelligent locking technology.What features does it have to protect against theft? A 12mm thick rounded shackle which is made of specially hardened steel - just like the body and structural parts of the locking mechanism. Combined with a high-quality locking cylinder which offers superb protection against tampering such as picking thanks to "double locking", the Ultra Mini 410 U-Lock is a reliable companion when you are out on your high-end bicycle. The lock passed the ice spray test with flying colors.Technology:Hardened 15/32" 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. pickingOperation and use:Good protection at medium theft riskRecommended for securing good bicyclesThe longer the shackle, the easier the bicycle can be locked to a fixed object