Kryptonite Kryptoflex 1518 heavy-duty key lock. The lock's 1800mm length is already enough to lock 2-3 bikes.15mm braided steel cable with greater strength to cut the lock. The lock's head rotates 360 degrees for easy unlocking and locking. Included in the package are 2 double-sided keys. Key Safe program - if keys are lost, send the 1st pair of standard replacement keys free of charge. (registration required) Dimensions: cable diameter 15mm, length 180cm Protection level: 3/10