Since 1963 from Japan, PIAA OTO STYLE horn is designed by PIAA technology providing performance products to all automotive & motorcycle enthusiasts around the world. The “Oto Style” represents a lightweight horn that is the world’s thinnest spiral horn. It is a new horn with the world’s thinnest body in the popular “400Hz / 500Hz” bass range. Big sound in s small package. The HO-14 is ideal for tight space applications. The twin horn produces a wonderful tone with its 400Hz and 500Hz combination. Do not underestimate this horn given its slim build. It will blow you away.