Features: Measuring range: 0-100psi. Thread: 1/4 BSPT, Outer diameter: 50mm. With stainless steel frame & brass internals-, durable, sturdy & long for time service. This pressure gauge is a great pressure measuring tool with stable performance. Suitable for air, water-, oil, air and other materials that are not corrosive to brass. Package Includes: 1x Pressure Gauge Specifications: Material: Stainless Alloy Size: approx 5x5x6.8cm/2x2x2.7in Thread: 1/4 BSPT Outer diameter: 50mm Range: 0-100psi 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.