Z LOK COMBO Another innovative step forward for on the move security. Z LOK COMBO offers the same ground breaking lightweight, adjustable zip tie design as the original Z LOK but with the added benefits of a larger locking circumference and reset-able 3 digit combination mechanism. A cutting edge concept in security with a multitude of applications, Z LOK COMBO now available in three colourways Yellow, Teal & Black. Our reusable security tie provides ultra-convenient added protection for use on car racks, with accessories and other outdoor equipment.