Etook U-Lock

The lock comes with a clever built in cable tie system to attach it to your bike, along with 2 keys. 

Traction resistance, Shackle 13x13mm, Special hardened steel, Corrosion resistant, 5 pin tumbler precision cylinders, Square lock protection, Anti spread protection, Double bolted locking, Externally sawing resistant, Freeze spray resistant, Drill protection, Cylinder protection.