Specification: Material: Polyurethane, Stainless Steel Color: Gold Tone, Black,Clear Bridge Tube Inner Dia. :9mm/0.35 inch Bridge Tube Length: 64cm/25.1 inch Bridge Tube Outer Dia. : 10mm/0.39 inch Filler Hose Thread Size: 1/4 NPT Filler Hose Hole Dia. : 8mm/0.31 inch Filler Hose Length: 66.7cm/26.2 inch Filler Hose with Screw Cap Dia.: 26mm/1.02 inch Filler Hose with Screw Cap Outer Dia. : 12mm/0.47 inch Fitment: Fit for Seastar inboard, outboard hydraulic steering systems. Used for refilling your boat's steering system fluid. Basic Instructions: 1. Attach bottle to helm reservoir (do not pierce bottle)(do not let bottle run empty). 2. Connect bridge tube to fittings on steering cylinder and loosen fittings. 3. Use helm to pump fluid through system by turning the wheel in one direction. Air bubbles will be pushed to the reservoir at the helm. 4. Manually swing the outboard through full articulation to relieve trapped air. 5. Note: Orientating fittings up while pumping fluid with helm will allow air to escape cylinder. 6. Repeat 3-4 times necessary until no air is visible in bridge tube. 7. Tighten fittings before removing bridge tube. Package Included: 1 x Bridge Tube 1 x Filler Hose with Screw Cap