Plantronics Blue Voice Tubes 10 Pack for Supraplus/Encore

Plantronics Voice Tubes - Pack of 10 for Encorepro, Supraplus, TriStar and Duopro. Voice Tubes should be changed with each user or every 3 months to reduce the amount of germs for hygiene purposes. The population of germs and bacteria can include E.coli, Streptococcus, Salmonella & Staphylococcus aureus, all potentially dangerous and contagious organisms.