Specifications: This magnetic fuel saver helps reduce scale build-up and corrosion in the engine. May contribute to reduced wear on O2 sensor and catalytic converter. Designed to support improved fuel efficiency. May assist in reducing carbon monoxide and hydrocarbon emissions. Helps support emission test compliance. Can help enhance engine performance. Promotes cleaner emissions and improved fuel economy. Suitable for most vehicle types. Easy to install with no tools or fuel line modifications required. Install the device as close to the engine as possible. Secured in place using the included tightening band. Type: Magnetic Fuel Saver Material: Plastic, Magnet Main Color: Yellow Features: Easy to Use, Fuel Efficiency Support, Magnetic Fuel Economizer Size: 37mm x 29mm / 1.46" x 1.14" (Approx.) Notes: Due to differences in lighting and screen settings, the item color may vary slightly from the images. Please allow slight variations in dimensions due to manual measurement. Package Includes: 2 x Magnetic Fuel Saver (with Tighten Band)