If you own a Specialized Stumpjumper or similar model and need a replacement derailleur hanger, this Juscycling part is exactly what you're looking for. This is hanger #12 that fits multiple Specialized models including Stumpjumper 100, Stumpjumper 120, S-Works Enduro, S-Works Epic, Hardrock, and several other models from 2002-2005. The high-strength aluminum alloy construction feels durable and well-made - definitely not some cheap, flimsy imitation part. It comes with the necessary bolts included, which is convenient since you'll need those for installation. The fit is precise and matches the original equipment perfectly on my Stumpjumper. Installation was straightforward - just make sure you align it correctly and tighten the bolts securely. Juscycling stands behind their products with a worry-free return policy if it doesn't fit your specific bike model. Having a spare derailleur hanger is smart mountain bike maintenance since these are often the first thing to break in a crash or tip-over. The quality seems comparable to OEM parts but at a much more reasonable price. If you need to replace a bent or broken derailleur hanger on your Specialized mountain bike, this is a reliable, well-made option that will get you back on the trails quickly. Definitely double-check your specific bike model and year against the compatibility list before ordering to ensure proper fit.