Very disappointed with this product. The package came without the screws /nuts needed to fix it to the floor. The buttons on the lid will not let the water flow stop and despite wasting lot of time,water keeps on filling the tank, the flushing action is not powerfull.Because of the small size of  the tank ,when the lid is in open position it feels a bit inconvenient to reach the flush buttons.I will be requesting the company to send a replacement lid and the screw /nut kit.