Utilizing the horizontal dual-pump jack with its universal joint deflation mechanism is straightforward. Attach the universal joint to the release valve, allowing for controlled and gradual lowering. The steel ball and seal components are crucial for maintaining the integrity and preventing leaks. This setup is great for safely lowering vehicles during tire changes, brake repairs, or other undercarriage work, ensuring a smooth and controlled descent every time. Features -Color:Silver -Material:Iron -Size:14.50X1.40X1.40cm/5.70X0.55X0.55in -enhanced lifting efficiency: featuring a dual pump design, this jack offers improved lifting efficiency, making it ideal for quick and effective vehicle maintenance -convenient universal joint head: the universal joint head design provides ease of use, allowing for flexible positioning and operation under various vehicle types -wearresistant steel ball seals: with durable steel ball seals, this jack is designed to resist wear, ensuring longterm durability and consistent performance -secure lowering mechanism: the safety drop universal joint ensures secure and controlled lowering of the vehicle, enhancing overall safety during use -safe : the function allows for safe and controlled release of hydraulic pressure, reducing the risk of accidental damage or injury Package list: 5 x jack universal joint