Description: Versatile Measurement Capabilities: This tool is designed to measure flatness and detect runout in disc brakes, tires, wheels, ball joints, and drive shafts, ensuring comprehensive checking of vehicle componentsAdjustable Flexible Arm: Featuring a 13.7-inch flexible arm with a versatile valve stem holder that can twist in any direction, this tool offers great freedom during installation and allows for measurements in hard to reach areasHigh Precision Dial Indicator: Equipped with a professional grade dial indicator measuring 0-10mm with 0.01mm accuracy, this tool provides precision readings for accurate assessments of component conditionsSecure Clamping System: The included strong grip clamp can be attached to various positions to support the flexible arm securely during use, enhancing stability and ease of measurementAluminum Construction: Made from quality aluminum material, this tool is both lightweight and sturdy Specification: Material: Aluminum Size Chart: Packing size: 25 cmx28 cm/9.84 inchx11.02 inch Package Includes: 1 Set Disc Brake Rotor Gauge Tool Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.