Plantronics Voice Tube (Cool Blue) For The Tristar, Encore, DuoSet, DuoPro, and SupraPlus models.

You should replace this vital part of your headset if the tip becomes clogged or damaged in any way. For best performance, routinely replace the voice tube every six months.

29960-01 Features:

• Tristar-Encore-DuoPro-DuoSet-SupraPlus Voice Tubes
• Customize Your Headset
• Optimum Voice Clarity
• Length 2 3/4"
• Clear Voice Tube
• New HP Part# 85Q67AA

Compatible with Plantronics Models: TriStar, Encore, DuoSet, DuoPro, and SupraPlus Series

• H81
• H81 CIS
• H91
• H91 CIS
• H101
• H101 CIS
• H141
• H171
• H251
• HW251
• AH450
• H261
• HW261
• AH460
• P91-U10P
• P91N-U10P
• P101-U10P
• P101N-U10P
• P141-U10P
• P171-U10P