FUNCTION -- Used for refilling your boat's steering system fluid. One person easily controls the bleed process from end to end. Replacement front seal kit for SeaStar pivot or front mount cylinders. Designed to repair leaking or weeping cylinder seals. BENEFITS -- Changing fluid bottles is quick and clean. The entire steering system remains sealed during the bleed process, ensuring fluid flows properly. Failure to replace a damaged steering cylinder may result in seal failure and potential loss of steering control. QUALITY -- HS5157 kit is made from high-quality aircraft-grade metal. The bleed kit is easy to attach and includes a tube with hose for improved functionality. APPLICATION -- Bleed kit for Seastar hydraulic steering systems. HS5157 kit fits front mount cylinder parts: HC5340, HC5341, HC5342, HC5343, HC5344, HC5345, HC5346, HC5347, HC5348, HC5358, HC5365, HC5375, HC5394, HC5445, HC6750, HC6751, HC6752, HC6753, HC6754, HC6755. Color: Black + Silver Material: Metal Package Contents: 2 x Seal Glands, 1 x Pin Wrench, 1 x Seal Gland Assembly Tool, 1 x Bottle to Tube, 1 x Bridge Tube. Only the items listed are included. Note: Light reflection and different display settings may cause slight variations in color compared to the actual item. Measurement may vary by +/- 1-3 cm.