Central Tool Tire / Wheel Run-Out Gauge Set • Checks Tire and Wheel Run-Out, Brake Rotor Run-Out and Ball Joint Wear • 1" Range • .001" Graduations • 0-100 Reading • Large Radius Contact Checks Radial Run-Out • Roller Contact Checks Wheels and Sidewalls • 8" Extension Provides Added Reach • Flex-Arm Makes Indicator Positioning Easy • Special Clamping Pliers Attach Securely Anywhere on the Balancer