- The Derailleur Hanger Alignment Gauge is designed for bike wheel sizes from 20 to 29 inches, making it suitable for high-end road bikes, mountain bikes, and everyday bikes, whether they feature removable derailleur hangers or not. - This tool effectively measures and straightens misaligned shift brackets, ensuring optimal gear shifting performance. With proper alignment, you can enhance your riding experience and prolong the life of your components. - Constructed with an improved large inner shaft, this alignment gauge offers added strength and tighter tolerances for enhanced accuracy during use. This ensures that every adjustment contributes to precise shifting. - The tool features a ball plunger that securely holds it in place, allowing for controlled play and stability during alignment tasks. This design minimizes movement, ensuring that your adjustments are exact. - An interchangeable threaded tip is included, providing extra clearance and reach for most bike frames, increasing the versatility of the tool for various setups. Use scenarios: - Ideal for bike mechanics and enthusiasts performing routine maintenance to ensure smooth gear transitions. - Perfect for addressing shifting issues after a crash or during bike assembly, ensuring your bike performs at its best. - A must-have for any cyclist looking to optimize their bike's performance and prolong the lifespan of their drivetrain components.