* High security bicycle lock. * Extra protected durable lock mechanism. * Thick and durable coil twisted inner steel cable provides maximum protection. * 4-combination numerical code. Owner changeable numerical code can be custom-set. * Strong metal lock mechanism. * Cable cover to protect your bicycleÔøΩÔøΩ_s paint from chips and scratches. * Sizes: 12mm / 15mm / 18mm x 1800mm.