ECO-FRIENDLY AND DURABLEThe plant self watering spikes system made of high-quality PP plastic and you can use them repeatedly because each irrigation drippers ensure long service life.The automatic plant waterer for outdoor plants with high strength and toughness, good heat and cold resistance, safe and durable. Recycle plastic bottles effectivelyit reduces waste and protect the environment. SUITABLE FOR DIFFERENT BOTTLESThe self watering spikes are suitable for all most bottles. It not only can be used for 1-inch bottle, but also the new waterer suitable for the bottle from 0.8in to 1.2in. Dont waste time finding the right bottle, most bottle make the automatic plant waterer system work.Such as Coca-Cola bottle, soda bottle, even the wine bottle. SIMPLE AND CONVENIENT TO USEInstalled without any tools, just drill some holes in the bottom of the bottle or cut the tail of the bottle to keep the air flowing. and then insert it into the soil. ADJUSTABLE VELOCITY DESIGNThe plant watering device with control valve can control the dripping speed of 0-60s/drip. You can set traffic for 1-15 days or more depending on the time you need and will never kill your plants because the water is flowing too fast or too slow. MULTI-SCENE APPLICATIONThese self watering spikes system can use for indoor or outdoor, home or office ensure your plants hydrated.These plant watering devices are perfect for potted plants, houseplants, patio plants, hanging baskets, deck pots, hanging plants small tree, shrubs or any other plants.