<b>Warm Tips:</b></br></br> 1.Please pay attention and make sure that your toilet tank's water inlet diameter is 7/8" for this set to be installed.<br> 2.We suggest you to turn off the water supply to the sprayer when it is not in use to prolong the lifespan of the sprayer and also to avoid any unwanted accidents.If you are not able to do that, adjust the water supply using the T-valve included to a low level (suitable for use as a handheld bidet) so that the water pressure on the hose and sprayer is not that high. </br></br> <b>How to use?</b></br></br> Step 1: Turn Off the Water Supply. </br> Turn OFF the water supply valve at the wall next to your toilet. Flush the toilet and hold down the handle to completely empty the toilet tank. </br></br> Step 2: Make sure there is a rubber washer inside both the female ends. </br> Confirm that the flat rubber washer is inside the top of your bidet's T-valve (hint: the top of the T-valve is where the spinning nut is located), and it is pushed all the way down to tighten the connection. </br></br> Step 3: Connect the T-Valve and the Hoses</br> Screw the top of the T-valve onto the toilet's fill valve where you just unscrewed the water supply hose. Be careful not to over-tighten the connections. Screw the toilet's water supply hose to the bottom of the T-valve. Connect one end of the handheld bidet hose to the side of the T-valve. Screw the bidet sprayer head onto the other end of the bidet hose. </br></br> Step 4: Turn On the Water Supply & Mount the Sprayer</br> Turn the water supply valve back on. If you notice that any connection is loose or leaking, you may need to add some plumber's tape. If you're leak-free, your hand-held bidet sprayer is installed. </br></br> <b>Toilet Mount:</b> Screw the holder onto the toilet tank clip. Lift up the toilet tank lid, slide the clip onto the side of the tank, and replace the lid. </br> <b>Wall Mount: </b>Use the drywall screws and anchors to attach the holder to the wall. </br>