Extended Run Gas Cap Adapter for Honda Generator EU20i EU10i EU1000 EU1000i EU2000 EU3000 EU3000i Handi fit 1/4" NPT Line Material: CNC Billet Aluminum,anodized red coated,effective anti-corrosion.We use improved fuel resistant sealing gasket.It's going to be stronger and more durable. Fitment: Honda Generator EU20i,EU10i EU1000 EU1000i EU2000 EU3000 EU3000i Handi,Champion 2000watt,Westinghouse 2200watt WH2200iXLT Generators. Characteristic: The crisp knurling design of the product surface can be effective anti-skid. Usage: This Custom Gas Cap Adapter allows the user to hook up an auxiliary gas tank so that it can be used to feed the primary generator gas tank for extended operation time.Each gas cap has a machined 1/4" NPT port on the top to install a standard fuel fitting and fuel line to an auxiliary gas tank (not included). Includes: 1/8" thick fuel resistant sealing gasket with each kit.(New version of the gasket, more durable)