The Bidet Sprayer comes complete with all attachments needed to quickly and easily attach to a standard 3/8 inch compression water valve (valve behind toilet). Each unit comes packaged with a hand sprayer; a flow control t-valve; 4 foot reinforced white NSF Approved PVC hose; built in check valve in sprayer (one way valve); step-by-step picture instructions; and a matching wall bracket including screws & plastic anchors. Each unit takes approximately 5-10 minutes to install when using a standard adjustable pliers. For your convenience, if you have a 1/2 inch connection, we sell a brass adapter and teflon tape which converts your water valve from 1 /2 inch to 3/8 inch. PLEASE NOTE: Only 5% of homes in North America have the 1/2 inch connection. All of our products come with a 90 DAY MONEY BACK GUARANTEE (unused items only). All returns will be returned at customers expen se and refunded the amount paid less the cost of shipping that we absorbe d to send the unit to customer... NB It is important that all Hand Held Diaper Sprayers are installed accor ding to all local building codes.