BCTHLBF 8 Pack Plant Waterer for Vacations, Automatic Watering Device Adjustable Plant Waterer Self Watering Spikes with Slow Release Control Valve Switch Bottle Drip Irrigation System

【Quality】Made of ceramic and PP plastic, automatically watering plants in pot and containers, both indoor and outdoor use. by the wind.Slanted mouth design fits most bottles. 【Size】Total length about 11cm, 2 different size shaft, max to 4cm(outside diameter), will fit most screw-top bottles up to 3-litre. 【Accurate & Effective】When the potting soil is dry, this spike will gradually dripping accurate water, prevent leaking and overflow, you can also add liquid plant food to boost growth. 【Easy To Use】 Simply screw on to old plastic bottle filled with enough water, then insert into soil, 600ml can last about 5-7 days, suggest to test on your plant 1-2 weeks before vacation. 【Wide Usage】Come in a pack of 8 with full instructions,Whether indoor/outdoor plant or garden, home or office, this self-watering spikes system ensure your plants hydrated, perfect for potted plants, patio plants, hanging baskets, deck pots, hanging plants and more.