Nippon Denko ND-NBSH Nanobubble Generation Kit for Shower Heads, Made in Japan. New, unused, and unopened. Thank you for considering. A kit that provides a comfortable shower experience while saving water with nanobubble effects. - Product Name: Nanobubble Shower Head Generation Kit - Connection Standard: G1/2 - Compatible Manufacturers: TOTO, LIXIL, SAN-EI, KAKUDAI, Yuko, Suidou-ya, Suikiyama, Takagi, GROHE, Hansgrohe - Effect: 15% water saving effect Thank you for looking.