Super loud 300DB snail horn set featuring the most powerful sound volume on the market - brand new discrete compact black design perfect for motorcycles, cars, ATVs, trucks and go-karts - made from quality metals and ABS construction that won't oxidize with low power consumption and high performance - produces loud, clear and deep train-like sound to reduce unnecessary injuries and add safety to your driving - beautiful snail angle appearance with special waterproof and dust-proof design for complete weather resistance - simple universal installation works with most 12V power supplies - includes 2 snail horns (1 pair) with eMark rating of Low 410Hz and High 510Hz - each speaker measures 9CM diameter x 9CM depth - durable weather proof, rain proof and storm proof construction.