Description: This oiler is used for the connection between the pneumatic tools and air compressor, automatic oiling, with filter and automatic water supply function, prevent pneumatic tools without refueling. It is a 1/4 threaded connection pneumatic automatic oiler with male and female connection thread. It is great for lubricating air tool for small jobs and can lengthen your air tools' service life and improve their performance.. Features: Solid metal construction with a high impact transparent clear body. Automatic in-line oiler for small tools. See-through reservoir shows when oil is low. Attaches between tool and air hose to lubricate tool during usage. Provides automatic lubrication of pneumatic air tools which prevents rust and corrosion. Allows the tools to have a smoother more effective operation, which extends the tools life. Specifications: Material: Zinc alloy Connector Size: 1/4 internal thread + 1/4 external thread Pressure: 150MPa Temperature: -20~105℃ Size: 5.5 x 3.2cm / 2.16 x 1.25" Weight: 77g(approx.) Package Includes:1 x Oiler LubricatorNote:1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard..