Winzik Mini Portable Colorful Metallic Anti-Theft Mountain Bicycle DiBrake Lock 2 Keys &ndash; Secure Wheel Lock Bike/Scooter / Golf Cart/BMX,Red Ultra-solid stainless steel can lock your bike tightly from thieves The size of lock groove is 1.89inch(48mm) in depth and (0.35inch)9mm in width. The diameter of occlusion is (0.24inch)6mm. Mini but firm. Accompany with lock frame for FREE which you can lay your disc brake lock into. Very easy for installation and fixation without any other tools. Suitable for Motorcycle, folding bicycle, geared bicycle, trial bike, recumbent and so on.