This derailleur hanger is designed for the Trenga bicycle frame rear direct mount dropout. It is an essential component for any bike enthusiast looking to upgrade their bike's performance. The set includes a derailleur (rear) and derailleur hanger, making it a complete package for the buyer. The part type is a rear derailleur, which is perfect for those who want to enhance their bike's speed and agility. This product is suitable for all types of cycling enthusiasts, whether you are a beginner or an experienced rider. It is made from high-quality materials to ensure durability and long-lasting use.