12mm, flexible BRAIDED STEEL CABLE provides increased cut resistance. ADVANCED CYLINDER provides greater protection from picking. LOCK HEAD ROTATES 360 degrees for easier handling during lock up and removal. EASY-CLICK locking - no need for keys when locking up. Integrated, adjustable spline attachment rotates up to 300 degrees for a greater number of possible lock carrying locations on bicycle frame or seat post. Includes TRANSIT FLEXFRAME-C transportation system which allows for versatile carrying. Dual sliding cylinder WEATHER GUARDS with automatic close feature. 2 EASY-TO-USE REVERSIBLE KEYS. Key Safe Program. Patent 6422442