Features: High precise steel sensors ensures accurate and stable pressure readings, making this pressure gauge essential air compressor accessory for industrial applications. Built with heavy duty steel construction, it offer exceptionally wear resistance and corrosions protective, ideal for harsh environments like construction site or outdoor operations. Designed for professional technicians, maintenance crews, and repair specialists who require reliabled compatibility across multiple air compressor and pumps models. Perfect for factory equipment calibration, pneumatic systems maintenance, or high intensity industrial tasks demanding precise pressure controller and long term durability. Features a tool less installation design and built in overpressure protective to safeguards equipment during extended use, ensuring seamless workflow and operational safety. Specifications: Component: Steel Size: Y40 Dials diameter is 40mm Installation thread is G1/8 Thread diameter is approximately: 9.5mm Y50 dials diameter is 50mm, mounting thread is G1/4, thread diameter is approximately: 12.5 mm Package Includes: 1pcs Pressure Gauge note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.