The universal joint on the horizontal dual- jack is engineered for optimal performance during deflation. By connecting the universal joint to the release valve, users can achieve precise control over the lowering process. The inclusion of steel ball and seal parts enhances the durability, making it a reliable tool for various automotive tasks. This jack is particularly useful in scenarios where controlled lowering is essential, such as when working on or repairs. Features -Color:Silver -Material:Iron -Size:14.50X1.40X1.40cm/5.70X0.55X0.55in -efficient dual system: the dual system increases lifting efficiency, enabling faster and more effective vehicle lifting and maintenance operations -flexible universal joint head: the universal joint head design offers flexibility and ease of use, making it simple to position under different vehicles - steel ball seals: equipped with robust steel ball seals, this jack is built to endure heavy use, providing reliable performance over time -safety drop universal joint: the safety drop universal joint ensures the vehicle is lowered securely, reducing the risk of accidents and enhancing user safety -controlled : the function allows for controlled and of hydraulic pressure, ensuring safe operation and preventing damage Package list: 4 x jack universal joint