ExpertPower Twist On Replacement Acoustic Tube for Radio Headset Twist on Secret Service / FBI style headset acoustic coil tube replacement. Clear, hypo-allergenic acoustic tube. Includes Quick Disconnect Tube, Earbud, and Twist-On Connector. Headsets requiring a push and turn round connector (Different styles may have to use existing connector). 1-Year Limited Warranty For Items Sold Exclusively By ExpertPower