Throat Mic Earpiece Headphone, 3.5mm Throat Mic Covert Air Acoustic Tube Earpiece Headset Anti Radiation with Finger PTT for Mobile Phone/Adjustable Size auspowers_batchthree From the Manufacturer Heavy T-Hinges

From the Manufacturer Heavy T-Hinges are designed for applications with narrow frame or post

The Evo Dyne Cutting Oil is equipped with strong friction-reducing properties to help in very extreme cutting applications

Male end thread length: 3mm or 4mm

7" Package Weight: 0

Throat Mic Earpiece Headphone, 3.5mm Throat Mic Covert Air Acoustic Tube Earpiece Headset Anti Radiation with Finger PTT for Mobile Phone/Adjustable Size auspowers_batchthree From the Manufacturer Heavy T-HingesThroat Mic Earpiece Headphone, 3. 5mm Throat Mic Covert Air Acoustic Tube Earpiece Headset Anti Radiation with Finger PTT for Mobile Phone Adjustable Size Description: This air tube headset throat mic can be used in noisy environment. Great sound insulation performance and less susceptible to external environmental, it will transmit sound in high quality. It has radiation protection as well. Transparent acoustic tube would be hardly noticed by others