Bike U Lock,20mm Heavy Duty Combination Bicycle u Lock Shackle 4ft Length Security CableAbout this item Premium Heavy Duty Bike Lock This bike lock comes with a 0. 86 inch heavy duty shackle and has excellent heat resistant and hydraulic shear resistant. Equipped with a 0. 10 inch silicone cover, it can prevents scratch well and provides excellent safety protection for your bicycle. Security and Anti theftThe bicycle lock is built in imported c grade pure copper look cylinder, which is certified to resist leverage attacks and provides