[high quality materials] the drip irrigation bottle is made of PP plastic, with good resistance to cold and heat, durable and reusable for many times. Continuous use even in harsh conditions and long service life. [Adjustable Irrigation Device] New irrigation system with control valve to supply different amount of water for different plants. It can control the speed of water drops within 0-90s/1 drops for several days. Just adjust the valve as needed. No complicated setting steps, save time and water. [Easy to use] drip, quick installation, no tools required, no drilling in the bottle. Just attach the watering device to the bottle opener, then turn the bottle upside down, insert the nozzle into the ground, screw the valve, no need to worry about water pressure, no leaking, simple and convenient. [Package Content] You will receive 12 automatic plant sprinklers. (three colors: green, beige, pink), for different bottle sizes. For building automatic irrigation control systems for outdoor and indoor potted plants. [Wide Usage] Whether indoor/outdoor or garden plants, home or in the office, perfect for potted plants, indoor plants, garden plants, hanging baskets, pots, hanging plants, etc. The perfect watering for holiday plants. Never worry about your plants dying during a business trip or vacation.