Easy to use: Connect a standard 1/4" refrigerant hose and a standard nitrogen pressure regulator to quickly switch between purge, braze, and close modes. Eliminates the need for dial adjustments and flow indicator valves. Extend equipment life: Facilitates smooth nitrogen flow during purging and brazing, removes refrigerant, moisture, and debris, prevents oxidation and equipment failure, keeps pipes clean, and helps reduce repair costs. Precise and afable: Ensures accurate nitrogen flow control for consistent purging and welding results while minimizing gas waste. Sturdy and durable: Full metal construction, compact design, resistant to wear, and portable enough to fit in tool bags, toolboxes, or pockets. Comfortable operation: Ergonomic knob design for ease of use. Material: Metal. Color: As shown. Note: Installation guide not included; professional installation is recommended. Verify compatibility before use. Product updates may occur; slight variations between batches, including color differences, are possible but do not affect functionality. Package contents: 1 x Nitrogen Purge Tool. Other items not included. Lighting and display settings may cause slight color variation between image and actual item. Measurement tolerance: +/- 1-3 cm.