Perko Straight Neck Vented Fill - for 1-1/2" HoseMade from white polymer. Straight neck, with an integral tank vent with flame arrestor, and a flip top cap. No ground wire required.Specifications: For Hose Size: 1-1/2"; For Vent Hose Size: 5/8"; Neck Length: 2-7/16"; Screw Size: #10;