- Durable Aluminum Alloy Construction: This bottom bracket is crafted from high-quality aluminum alloy, providing exceptional strength and durability that withstand the rigors of demanding cycling conditions, ensuring a long-lasting performance. - Precise Fit for Mountain Bikes: Designed specifically for frame sizes 68mm and 73mm, with an inner diameter of 24 x 24mm (0.9 x 0.9in), this bottom bracket seamlessly integrates with existing cranksets, making it an ideal replacement for mountain bikes. - Anti-Corrosion Protection: Featuring a sealed silicone rubber waterproof ring, this bottom bracket offers robust protection against corrosion, water, and sand, ensuring reliable performance across diverse weather conditions. - Easy Installation and Disassembly: Its user-friendly design allows for quick and hassle-free installation and removal, making it an excellent choice for both professional mechanics and DIY cycling enthusiasts. Use Scenarios: 1. Perfect for upgrading your mountain bike, ensuring compatibility with various crankset models. 2. Ideal for cyclists who frequently ride in wet or sandy environments, as the anti-corrosion features enhance longevity. 3. A practical solution for maintaining your bicycle's performance, allowing for quick adjustments without specialized tools.