High-performance muffler cutter made by DuelL AG, featuring a stylish black design. - Brand: DuelL AG - Color: Black - Material: Real Carbon - Features: Designed for performance improvement - Logo: We serve you higher performance ! Thank you for viewing. The carbon tail has a smoke clear coat, so there is no deterioration. Also, it can be installed on any muffler with a diameter of 70Φ or more. I don't think you'll find real carbon at this price very often.