EZGO 609803 Battery Filling System Fill Gun Fits on the Battery Filling System delivery gun for accurate, efficient and proper maintenance during the watering of the vehicle's batteries Filling apparatus used to control the flow of water into the vehicle's batteries Apparatus includes: 3/8" female connector, dust cap, 3/8" hose barb, crimp clamp, flow indicator, lock clamp, 10mm clamp and 3/8" hose