1. Function: It is used to replenish hydraulic oil for the ship's steering system, and one person can easily control the entire exhaust process from start to finish. This is a pre - replacement sealing kit for pivot/front - mounted cylinders, which can be used to repair leaking or seeping cylinder seals. 2. Advantages: The oil bottle can be replaced quickly and cleanly. Throughout the exhaust process, the entire steering system remains sealed at all times, ensuring that the hydraulic oil flows to where it should go. If the damaged steering cylinder is not replaced, it will lead to seal failure and may even result in the loss of steering function. 3. Quality: The HS5157 kit is made of high - quality metal. The exhaust kit is easy to install and use, and the oil pipe is now equipped with a hose. 4. Application scope: The exhaust kit is suitable for hydraulic steering systems. The HS5157 kit is suitable for the following front - mounted cylinder components: HC5340, HC5341, HC5342, HC5343, HC5344, HC5345, HC5346, HC5347, HC5348, HC5358, HC5365, HC5375, HC5394, HC5445, HC6750, HC6751, HC6752, HC6753, HC6754, HC6755. 5. Color: Black + Silver 6. Material: Metal 7. Package contents: - 2 sealing gland caps - 1 pin wrench - 1 sealing gland assembly guide tool - 1 bottle - to - tube connector - 1 bridge tube Only the above items are included in the package, and other items are not included. 8. Precautions: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the actual one. The measurement tolerance is +/- 1 - 3 cm.