Youha Single Tubing for The One Breast Pump is a replacement tubing forYouha The One Double Electric Breast Pump. This tubing allows you to pump single-sided.It is ideal to replace your parts every 3-6 months, depending on how frequent you pump. Replacing your tubing frequently is essential in keeping your breast pump working in top condition for best pumping experience. ForYouha The One Double Electric Breast Pump (click here) only. Contains 1x single tubing only.