The STEELMAN PRO 79030 is a single replacement sensor clamp for the Bluetooth ChassisEAR Lite Kit. This specially designed clamp incorporates a piezoelectric microphone that picks up vibrations and noises which can then be transmitted to a device via an attached Bluetooth module (sold separately). The strong clamping jaws have a center notch on the tip for easier attachment to rounded pipes and bolts. A series of serration-like cutouts along the inside of the handles provide additional grip for the use of zip ties or hook and loop straps to secure the clamp in place in high risk areas where it might experience excessive vibrations and come free during testing. Replacement pack only contains a single sensor clamp complete with Bluetooth module sockets. Compatible with both the 78684 Bluetooth ChassisEAR and 78752 Bluetooth ChassisEAR Lite.