Parts List: 2 x Car Fuel Savers Highlight description: [Portable Car Fuel Saver] The small and portable fuel saver makes your engine last longer and allows you and your family to enjoy a more environmentally friendly trip. [Easy to Use] Just insert this car fuel saver into the OBD2 connector of the car, and turn the ignition on for 30 seconds. and turn on the engine. [Efficient Fuel Saving] This auto fuel saver is efficient and can save gasoline. Environmental protection and low emissions to the economy. [Wide Applicable] This car fuel saver is suitable for most car models. Very easy to use, you only need 1 minute to read the instruction. [Economy] Energy prices are getting higher and higher, and the use of fuel-saving treasures can effectively reduce driving costs. If you have any questions about our product, please contact us without hesitation. Detailed description: Product Name: Car Fuel Savers Key Features: Economy: Energy prices are getting higher and higher, and the use of fuel-saving treasures can effectively reduce driving costs. Wide Applicable: This fuel saver is suitable for most car models. Environmental Protection: Low emissions to the economy. How to Use: Plug the fuel saver into the OBD2 connector of the car. and turn the ignition on for 30 seconds. and turn on the engine. Easy to Use: Very easy to use, you only need 1 minute to read the instruction. Specification: Material: ABS Size: 5 x 3 x 2.5 cm/ 1.96 x 1.18 x 0.98 inch Note: 1. Please make sure your harness is the right size before you buy. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Please allow slight dimension difference due to different manual measurement. Thank you for your understanding.