[Three-Mode Knob for Easy Operation] Quickly switch between "Purge," "Bragging," and "Off" modes with a simple turn. The 1/4-inch flared connector allows for quick and easy connection to HVAC systems. [Durable and Resistant] Made of brass and reinforced materials, this tool is wear-resistant. Designed for harsh environments, it ensures long-term reliable operation. [Compact and Portable] Compact size for easy carrying and storage. The ergonomic knob design remains comfortable even during extended use, making it ideal for frequently traveling professionals. [Clear Click Feedback] The knob provides a clear click in each mode, offering distinct feedback when switching functions. This ensures accurate settings every time. [Enhanced Stability and Efficiency] Experience enhanced stability and efficiency with a fixed gear and adjustable regulator (50-200 PSI). Ideal for reducing downtime during HVAC operation. Please note: Slight color variations or slight differences may exist between the actual product and the specifications. This does not affect the use of the product. Thank you for your understanding! Product Name: Mini Woodworking Planer Color: As shown in the picture Material: Brass Package Contents: 1 * Nitrogen Purge Tool This package only includes the above contents and does not include other products. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual product. Measurement tolerance is +/- 1-3 cm.