Size: 6.3"/160mm x 2.76"/70mm x 3.07"/78mm. Please allow 0.5-1cm deviation due to manual measurement. Premium Material: Made of ABS material, paint baking processed, The shark fin antenna is tough and sturdy. Enhance Signal: Shark fin antenna has built-in pure copper antenna and chip, which can better accept AM/FM the signal and make the signal stable and strong. Easy to Install: 1.Remove the antenna of the original car and wipe clean the side position; 2.Take out the antenna and sticker, and stick the tape on the bottom of the antenna; 3.Tighten the screw of the antenna with a tool; 4.Align the position directly and press firmly. Note: Before pasting, please keep the installation location clean and dry. Widely Applicable: This universal shark fin antenna suitable for most cars on the market. It is only suitable for flat roofs and not for curved roofs. (To ensure proper installation and use after purchase, please check the size of your car's antenna base before placing your order.)