The STEELMAN ChassisEAR - EngineEAR Combination Kit allows the user to detect squeaks and rattles features the EngineEAR electronic stethoscope and the ChassisEAR under chassis noise and vibration finder. The STEELMAN ChassisEAR allows user to listen to up to 6 different locations in 1 road test and hear noises that cannot be duplicated in the stall. Professional headphones shut out surrounding sound. 6 color coded, super sensitive microphone clamps attach to the problem area with 16 ft. wire leads that can reach to all vehicle locations. Clamp the 6 sensors to springs, torque rods, shocks, body mounts, brakes, dash assembly, door hinges, drivetrain, rear or front axle, transmission, transfer case, suspension, sway bars, tie rod ends, struts, axle hubs, ring and pinion bearings, mufflers, catalytic converter, O2 sensor, oil pump or even an un-torqued bolt. The EngineEAR functions as an electronic stethoscope and can be used under the hood, along windows etc. Material: ABS Plastic.