The PERRIN Brackets for HELLA Horns are designed in three variants allowing for a perfect fit on your specific model of WRX/STI. Being tailored for specific models makes for better fitment than competitors' universal brackets. Made from thick, precision laser cut, and CNC formed 304 Stainless Steel, these brackets are designed to withstand all climates and not fatigue over the lifespan of the product. By using 304 Stainless Steel, even if the powder coat fails, the bracket will not rust over time as opposed to mild steel.