Master Lock Cylinder U-Lock Set of 2 4 Keys x 2 Black 13x280x110mm 8195JADPROLWREF Cover made of reflective material that also functions as a reflector. 13mm diameter hardened steel shackle for high cut resistance. High-security cylinder with anti-picking system. The keyhole has a cover to prevent trouble caused by dirt or foreign matter entering and preventing the key from being inserted. Stored at home. Please purchase only if you understand.