Make locating spots of rotor runout easier with the STEELMAN 60378 Disc Brake Runout Gauge with Dial Indicator. Featuring a 12-7/8-inch articulating flex arm that attaches to a set of locking pliers, this tool helps detect warpage on rotors due to the extreme heat of hard braking, wear from stuck calipers, and poor machining. The rugged 7-inch carbon steel locking pliers are able to be clamped onto lower control arms, caliper carriers, steering knuckles, or struts to provide a stationary anchor for the gauge. The flex arm is fully articulated and can be locked into place, keeping the gauge's needle in constant contact with the rotor surface. Gauge readings are accurate to within +/-0.001-inch and the entire kit comes in a blow-molded plastic case for easy storage between uses.