Features: Large 2"Dial, 1/4"NPT Center bottom mount connection. Plastic for case, rotate ring, start and clean filter, brass wetted parts. With obvious mark on the front, twist to move bezel, help operater to set the start and clean filter. Pressure range to 60psi/4bar-, double scales with different color, easy to read. Suitable for pressure measuring on the filter of swimming pool,Spa, Aquarium Water and so on. Package Includes: 1x Filter Pressure Gauge Specifications: Material: plastic & metal Diameter: approx 50mm/2in Thread: 1/4"NPT note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!