Feature: 1. Newly upgraded with a total valve switch, convenient for daily manual switching without adjusting the flow rate. 2. Patented valve design, leak-proof, easy to clean, stable pressure. 3. External thread design, preventing blockage, the sealing ring is inside the thread, preventing the material from running to the thread position. 4. 3-stage carbon fiber filter, effectively filtering impurities. 5. New patented bubble counter, directly inject water with a syringe, the equipment can also add water during normal operation. Specification: External thread structure, which is leak proof, easy to clean, and stable in pressure. Equipped with a 3 stage carbon fiber filter, it has a total switch for easy daily manual switching without adjusting the rate, making it the best choice for beginners. Specifications: Main material: Stainless steel Main color: Silver Size: 2L: Height: 37cm; diameter: 10cm; . Package List: 1 * three stage filter 1 * syringe 1 * water bubble counter 1 * spare sealing ring 1 * 7CM refiner 2 * suction cups 1 * trachea 1 * solenoid valve 1 * power cord