An ideal choice for mountain cyclists, this derailleur hanger is a dependable replacement part to enhance gear shifting accuracy. Engineered for thru-frames, it delivers enhanced stability and resilience during demanding rides. The hook design meets the needs of men, women, and teens active in outdoor cycling and sports pursuits. Made from high-strength aluminum alloy, it provides enduring performance and resistance to deformation. Specifications: Material: Aluminum alloy, Product size: about 3.88x7.3cm/1.53x2.87 inches, M12*1.0. Package includes 1 * rear derailleur hanger.