Fits the H81, H91's & H101, H251's,H261's,HW251,HW261's, HW251, H171 .H141 , for Supra Plus Tristar, Encore,Duoset/Pro and Wireless CS351,CS361.
Supra tube placement,P/N: 29960-01 Clear Replacement Voice Tube for Encore, Tristar and SupraPlus
Not original.
Tristar (h81/h81n) & Encore (h91/h91/h101)
Voice tubes for Tri-star & Encore & Supra plus headsets