Use the extra t-screw set in conjunction with our wood security hangers when additional locking points are desired for added security. The extra t-screw set can also be used to convert z-bar or other cleat systems into security hanging systems. 1 t-screw, 1 anchor, 1 plate, 2 #6x1/2 inch screws. Requires the use of special wrench, SC05, for installation and removal. Each