"Yellow and black fuel pipe diameter: approx. 3mm inner - 5.5mm outer, suitable for engines with 18mm fuel tank opening. Pipe length (black): 25cm / 9.86in, pipe length (yellow): 15cm / 5.91in. Fuel filters are available for 2 and 4 stroke Note: The fuel pipe included in the delivery is not included in the fuel tank connector inserted Due to transportation, add a few drops of oil into the connection to facilitate insertion. Hedge trimmer fuel filter. Easy installation, please check the dimensions before installation.< /p> < p>General brush cutter accessories Fuel tank gasket material: rubber Fuel pipe material: PU Fuel pipe diameter: approx. 3mm inner - 3.5mm outer for 18mm tank mm hole Package includes: 2 sets (fuel filter, fuel pipe, fuel tank rubber pad) 4x fuel tank rubber gasket + 2x primer pump Usually used for brush cutters hedge trimmers.