Produced by Al, the quality is quite good. Suitable for Jiebi dental flushing device WP-100EC(WP-100) WP-250EC (WP-300) WP-440 WP-450 WP-660 WP-900 Aier 1200 1600 use, suitable for daily care of general oral cavity washing. Fine workmanship, excellent materials, transparent tube body made of Bayer PC material. The marked price is the price of a single piece.