Properties:1. Water Pressure Is Not Affected By Lowered Water Level2. Improved Valves Regulate Drip SpeedNo Need To Cut Bottles Or Drill A Hole3. Sturdy Abs Plastic For Long Life4. Used For Indoor Garden, Potted Plants, Houseplants, Herbs Etc.Application:Step 1: Insert The Control Valve Into The The Plant Watering System.&Step 2: Insert The Holder Into The Plant Watering Device.Step 3: Insert The Plant Watering Device. Automatic Watering In The Bottles.&Step 4: Adjust The Nut To Control The Water Flow.&Step 5: Put It In The Ground.Features:Color: Green, Pink, Cream WhiteMaterial: AbsQuantity: : 18 Pieces550Ml Water Supply Time Approx.: 5 ~ 7 Days2000Ml Water Supply Approx.: 7 ~ 15 DaysScope Of Delivery:18 X Drip Irrigation Drop (Three Colors)18 X Valve Switches18 X Fixings1X User ManualNote:1. You Don'T Need To Drill Any Holes In The Bottom Of The Bottle.2. Is Not Influenced By Hydraulic Pressure. It Can Still Sink And The Water Level Is Low.