This Aimes Toilet makes use of Tornado Flush Engineering, which siphons drinking water with two powerful nozzles, harnessing the power of h2o and gravity to maximize cleansing and use water more proficiently. To buy substitute pieces, or for support with finding a TOTO showroom or product literature, press three when prompted. http://bbs.xinhaolian.com/home.php?mod=space&uid=4522767