3/8Inch×50 Feet: The size of the hose connector is 3/8 inch. The 50-foot hose can meet most of your DIY and work needs. Adjustable Design: The guide arm can be easily adjusted to 5 positions with 1 screw, which is convenient and quick to use. Easy to Install and Use: "L"-shaped mounting base is easy to install with 4 grooves reinforcement. Roll tube has an automatic locking and rewinding function. When locking, it sounds like click and can fixed length; lightly pull, automatic rebound, convenient storage. High Quality and Durable: 4 non-knotted rollers effectively reduce the abrasion of the hose. The high-quality mixed polymer rubber hose has good flexibility without cracking. And it is resistant to water, oil, abrasion, heat, and low-temperature weather (still working in an environment of 14°F to 149°F) with a maximum working pressure of 300 PSI. Use Scene: The air hose reel can be installed on any surface such as a floor, wall, ceiling, etc. according to your needs. It is very suitable for conveying water, pressure fluid, thin oil, gas, etc. It is a tool room must have for factories, auto repair shops, and garages. Ideal tool for other workplaces too.