attwood Low Permeation Fuel Line Kit (Mercury with Twist Lock Connectors) For use with portable fuel tanks and popular outboard engines. Made to the highest quality standards. Alcohol-resistant hose, suitable for use with leaded and non-leaded fuels. 3/8-Inch I.D. hose for maximum flow. Primer bulb is injection-molded for strength and durability. Double check valve for quick priming and unrestricted flow. Non-corrosive, galvanized hose clamps. Low Permeation. Re-engineered barbs and stepless clamps add strength and leak resistance. EPA certified compliant hose.