CHRMFLXARM RTRKIT LED Checks ball joint wear and disc rotor run-out. Checks tire and wheel run-out, gear backlash, valve guide wear, etc.. . Chrome plated 12 flex armMeets all state inspection requirements. This Disc and Rotor Flex Chrome Kit includes both Disc and Rotor/Ball joint gage and 14 LED ultra-bright flashlight. Features include quick release mounting bracket, Indicator has 0-1 travel and .001 graduation, 3 AAA batteries included. All packed in a convenient, shop-hardened case. 72-520-451