Features: Ensuring stable derailleur alignment with this high strength nylons bicycles derailleur hanger tool, designed to prevent shifting issues during intense cycling on mountain or commutes. Crafted from light weight yet durability nylons, this universals bike derailleur adjuster offer simple installation and weather resistant performances across diverse cycling conditions. Ideal for cyclists with multiple bikes or beginners seeking simple maintenance solution for mountain, or commuters bicycles requiring reliability gear stabilization. Maintains consistent shifting precisions during long distance races, wet weather adventures, or daily commutes where vibrations and impacts threaten derailleur positioning. Reinforced stress points to withstand sun exposure, moisture damage, and repetitive trail impacts without adding bulk. Specifications: Dimension:40x34x6mm/1.57×1.33×0.24in Component:nylons Package Includes: 1pc Bicycles rear derailleur holder note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.