The Used Derailleur Hanger #217 by Wheels Manufacturing is designed specifically for Diamond Back and Raleigh bicycles. This set includes a derailleur hanger, a crucial component for ensuring proper gear alignment and functionality on your bike. With the brand's reputation for quality and compatibility with top bike brands like Raleigh, this derailleur hanger is a reliable choice for cyclist looking to replace or upgrade their bike's rear derailleur hanger.