ULAC Mini Portable Anti-theft Resettable 3 Digit Bike Bicycle Cycling Spring Combination Cable Lock Senior Travel Luggage Locks Helmet Lock Easily to lock helmet, saddle, wheels and luggage and more Code lock, never worry to lose the key Easy to operation and be applied for many cases The coiled cable is able to customize( normal size is 4mm x 1200mm ) The digits are preset at 0.0.0  Push the reset button in and hold.  Now set your own combination.  Release reset button.Your personalized combination is now set.