Giant's Surelock Flex Key 15 cable lock is a tough, flexible and lightweight security feature for cyclists on a tight budget. The name 15 comes from the 15mm heavy duty flex cable at the heart of this lock. This cable will provide good resistance from certain types of attack and best used in low crime areas.The cable is also vinyl coating to protect your frame from scratches. Included in the pack is a QR mounting bracket so you can attach the lock to your frame rather than storing it in your pocket or pack.Features:15mm Heavy Duty flexible cableLock: X2p Double bolt locking mechanismM-Key cylinder4 standard keys and 1 LED keyQuick release mounting bracket