Package includes: 5 sets of fuel filters, including 5 black fuel filters, 5 yellow fuel filters, 5 2-hole gaskets and 5 primers, which can be used on multiple engines at the same time. Size: The inner diameter is 3.5mm and the outer diameter is 5.5mm, suitable for engines with a 18mm tank opening. The length of the black fuel pipe is 26cm and the yellow one is 15cm. Type: Fuel filters are available for 4-stroke. 2-hole gasket: The 2-hole oil seal can maintain good sealing. The grass trimmer fuel line is soft and flexible and easy to install the carburetor on the engines. Wide Application: The fuel hose is the perfect replacement part for many household machines, such as trimmer, lawn mower, chainsaw. Please check whether the accessory size is compatible before purchasing. Specifications: Material: PVC and rubber Color: Black, yellow Size: Length: 26cm/15cm Inner diameter: approx. 3mm/0.1inch Outer diameter: approx. 5.5mm/0.2inch Package Includes: 5 x Fuel Hose (Black) 5 x Fuel Hose