Specification:Condition: 100% Brand NewItem Type: Fuel Tank CapMaterial: Aluminum Alloy1.5inch:Application: Suitable for welding on pipe joints with 1.5 inch inner diameterCap Diameter: Approx. 54mm/2.1inCap Height: Approx. 15mm/0.6inOverall Height: Approx. 56mm/2.2inBore: Approx. 38mm or 1 1/2inNeck Outer Diameter: Approx. 44.5mm/1.8in with a Step of 5mm/0.2in Long of 40.4mm/1.6in DiameterNeck Thread: M48x2.5Cap Thread: M48x2.52.0inch:Fitment: Suitable for welding on 2 inch inner diameter pipe interfaceCap Diameter: Approx.58mm / 2.3inCap Height: Approx.15.5mm / 0.6inOverall Height: Approx.81mm / 3.2inBore: Approx.47mm/1.85inNeck Outer Diameter: 2inNeck Thread: M52x2.5Cap Thread: M52x2.5 Feature:1. High quality aluminum alloy material, antirust, sturdy and durable.2. Excellent mechanical stability and corrosion resistance.3. Easy to install, no complicated tools required, convenient to use.4. Suitable for welding on pipe joints with 1.5 inch or 2.0 inch inner diameter.5. Precisionmachined to exact tolerances for troublefree performance. Package Including:only 1 PieceNote :Profeional Installer is Highly Recommended (No Instruction Included).We are manufacturer, if you want other size , please contact us.thanks.All items are Brand New unle stated otherwise on the listing. We sell DIY (Do It Yourself) Items with a few exceptions.We take no responsibility in teaching you how to install. Profeional installation is strongly recommended.