Welcome to the store! 1. The 3 impeller water flow meter helps you observe the speed and working status of the water flow. 2. Made of high-quality acrylic material, durable to use. 3. Polished surface treatment enhances cutting characteristics and prolongs service life. 4. Self-adhesive type, easy to install and use. Features: 3 impeller water flow meter helps you observe the speed and working status of the water flow. Made of high-quality acrylic material, durable to use. Polished surface treatment enhances cutting characteristics and prolongs service life. Self-adhesive type, easy to install and use. Specifications: Type: Square 3 Ways, Square 2 Ways, Half Circle 2 Ways (Optional) Color: Transparent + Red Material: Acrylic Screw Thread: G1/4 Interface Diameter: 12.9mm Package List: 1 * 3 Impeller Flow Meter We strive to achieve your satisfaction and only provide you with a great shopping experience. If you have any questions after receiving the goods (different product quantities, damaged packaging, etc.), please contact us in time! We will provide you with the best solution.