1. Lightweight design Made of materials, this bike bottom bracket is designed to provide lasting performance without adding unnecessary weight. 2. Improved appearance Slim design enhances the look of your bike and adds fashion and personality. It helps your bike look cooler and more distinctive on the road. 3. Easy installation Simple installation process with no modification, cutting, or drilling required. Designed to fit seamlessly on your bike for a hassle-free upgrade. 4. Wide compatibility Compatible with chainrings with an axle outer diameter of 24 mm, making it suitable for a variety of chainring options. Ideal for both mountain bikes and road bikes, offering versatility across different bicycle models. Use scenarios - Upgrading an older road bike to improve performance and aesthetics during a routine upgrade. - Replacing a worn or incompatible bottom bracket on a mountain bike or road bike to enable 24 mm axle chainring compatibility. - Building a lightweight commuter or all-rounder with a bottom bracket that supports 24 mm chainrings and minimizes weight impact.