What you get and materials - 20 pieces improved version of the automatic watering set - 20 pieces fixed support structure - 1 pin for drilling bottles - All parts are made of PP plastic and designed for repeated use - Each watering dropper is built for long service life with high strength and toughness, and good heat and cold resistance Precise drip rate control - Exclusive patent drip switch for accurate flow control - One-handed operation with easy adjustment - Each turn changes the water flow only slightly for fine regulation - Maximum drip duration adjustable up to 60 seconds - Improves control and extends drip time compared with older versions Bottle compatibility and simple installation - Fits 99% of drink bottles with a bottle stopper design - No rotation installation required - Simply place the fixator on the bottle and turn the bottle upside down - Suitable for mineral water and drink bottles with inner diameter 0.8 to 1.2 inches Stability and wind resistance - Tilt protection bracket included with a total of 20 parts per self-watering mandrel - Holder can bear heavier bottle weights - Prevents drainage due to excessive weight when using large bottles - Helps prevent tipping due to wind or outdoor conditions Practical applications - Home plant care: efficient drip watering for potted plants and seedlings - Balcony or greenhouse use: steady irrigation for multiple containers without frequent refilling - Office or terrarium setups: convenient, drip-based watering for desk plants or small ecosystems