Attwood Marine - Fuel Line Surge Protector - For 5/8" Hose - 16756. Meets ABYC Standards. Helps avoid fuel spills because the surge helps automatic fuel nozzles shut off as the tank fills. Glass-filled polypropylene construction and surge-ball design. Withstands oil, gas, and alcohol-blended fuels. Compact size allows installation inside gunwale in any orientation within 45 of vertical. Includes two hose clamps.. Hose - 5/8" Inside Diameter. Size - 1-7/8" x 4-11/16"