Specification: Material: Polyurethane, Stainless Steel Color: Gold Tone, Black, Clear Bridge Tube Inner Diameter: 9mm/0.35inch Bridge Tube Length: 64cm/25.1inch Bridge Tube Outer Diameter: 10mm/0.39inch Fill Hose Thread Size: 1/4 NPT Fill Hose Hole Diameter: 8mm/0.31inch Fill Hose Length: 66.7cm/26.2inch Fill Hose with Screw Cap Diameter: 26mm/1.02inch Fill Hose with Screw Cap Outer Diameter: 12mm/0.47inch Fitment: Fits Seastar inboard and outboard hydraulic steering systems. Used to refill steering fluid in your boat. Basic Instructions: 1. Attach the bottle to the steering reservoir (do not puncture the bottle) (do not let the bottle run empty). 2. Connect the bridge tube to the fittings on the steering cylinder and loosen the fittings. 3. Use the steering to pump fluid through the system by turning the wheel in one direction. Air bubbles will be forced into the reservoir by the steering. 4. Manually swing the outboard motor through its full range of motion to release trapped air. 5. Note: Pointing the fittings upwards while pumping fluid with the steering allows air to escape from the cylinder. 6. Repeat steps 3-4 as many times as necessary until no air is visible in the bridge tube. 7. Tighten the fittings before removing the bridge tube. Package Contents: 1 x Bridge Tube 1 x Fill Hose with Screw Cap