【ADJUSTABLE VALVE】The indoor and outdoor plant self drip system with adjustable valve can control the drip rate between 0-60s/drip freely. It usually slows down with the time so you may test it few times before best results. Don't worry about your plants withering during travel for business or travel on holiday.【EASY TO USE】The plant self watering spikes with bracket are made of premium ABS plastic. Without any complicated installation, you just use the tool which we have attached inside drill the holes in the bottom of the bottle to keep the air flowing, and then insert these automatic watering devices into the soil.【FOR 500ML BOTTLES】Suitable for 1 inch/2.5cm inner diameter of the bottle. We suggest to use the 500ml bottle, self watering pots for indoor and outdoor plants, which is more suitable for standing upside down. (Measure the inner diameter of the bottle including the thread size before installation).【ECO-FRIENDLY & DURABLE】The automatic plant watering stakes made of high-quality plastic and can use it repeatedly. The watering spikes for outdoor plants with high strength and toughness, good heat and cold resistance, safe and durable. Recycle plastic bottles effectively. Reduce waste and protect the environment【WIDELY APPLICATION】The watering device is perfect for potted plants, garden, houseplants, patio plants, hanging baskets, deck pots, hanging plants and many more, which provides different amounts of water for different plants and flowers. We recommend that you use it according to your potted water needs.【EXCELLENT SERVICE】Customer satisfaction is our top priority. If you have any doubt of this plant self watering devices, please feel free to contact us, we will reply you and solve the problem within 24 hours. To make your shopping experience better and to enhance our service, if you have any better suggestions, we are always willing to listen. Product Description Adjustable Flow Speed Design This plant watering device consists of a slow-release control valve switch, self watering spikes will not become blocked by mud. Only adjust the valve to Meet your needs without complicated setup steps. Save time and water. Using our plant watering stakes, don't need to worry about your plants withering during travel, business or on holiday. -The self watering bulbs for indoor and outdoor plants, Keep Your Plants Healthy & Help You Take Care of Plants -Self-watering devices is adjustable with the control valve, the watering system suitable for 3-5 day trips. -Self watering planter insert, no any tedious installation,don't need other tools. -The plant self watering devicesfits on most bottles with 1 inch inner diameter and 550ml capacity. These self watering spikes can accurately calculate the flow of water, provide different amounts of water for different plants and flowers, so you may test it few times before best results. The bottle of 550ml water supply time about 3~5 days. Enjoy your holiday with your family, leave your plants to our plant watering s takes, self water your plants and vegetables, and make your plants thrive. Inner diameter This self watering planter insert compatible with all 1.1 inch/2.8cm inner diameter, suitable for many bottles, not for mineral and purified water bottles. Length of stake Watering globes for indoor plants, the self watering spikes are long enough to hold securely on pots. No any tedious installation,don't need other tools. Self Watering Self watering globes for outdoor plants, adjustable speed design, accurately control the flow and give appropriate amount of water for different plants and flowers. How to Use 1. Tighten the knob on the control valve, place it into the spikes and tighten it. Put the device in the plastic bottle. 2. Make the holes at the bottom of the bottles or cut it. Insert the assembled watering device into the pots and fix it. 3. Insert the self watering spikes into the pot and shake it slightly to check its stability, Keep it firmly inserted in the pot. 4. Open the valve to let the water flow out naturally, adjust the speed of drip depending on the time you need. Notes: 1. Make sure there is a hole in the bottle or the bottom of the bottle is cut off. Without air pressure, no water flows out of the irrigation. 2. Adjust the water flow to the maximum value before each use. Make sure there is no air in the watering spike. Then adjust the water flow slowly. 3. After adjusting the flow rate and burying the outlet of the irrigation system into the ground, the flow rate is most stable. Material Coir Fiber Silicone Stainless Steel+Plastic Stainless Steel Plastic Metal Season All Seasons All Seasons All Seasons All Seasons All Seasons All Seasons Giftable Indoor and Outdoor Multi-purpose