Flexible earhook for DuoSet convertible headset. (The DuoSet is the headset which comes with the CS10, CT12, CT14, S20, T10, T20 and S10 systems.) Fits comfortably and securely around your ear with loop for easy disengagement. Cord restraint notches at top of earhook hold cord in place so it does not fall toward user's face. Click on small inset photo of earhook shown with H141 to enlarge.