What it does and why you need it Lets you fit a brazeon front derailleur to any frame that lacks a brazeon mount. Ideal for upgrades, swaps, or repairs when your frame only accepts a band clamp. Converts incompatible frames quickly and securely, avoiding the expense and complication of frame modification. Key benefits Durable and lightweight: made from aluminum alloy for longlasting performance and reliable service on the bike. Secure fit without damage: wider band clamping design spreads clamping pressure evenly around the seat tube to reduce stress points and minimize frame marking. Simple and fast installation: supports a bandon clamp so you can mount a brazeon front derailleur without welding or permanent changes to the frame. Two size options for compatibility: available in 8mm and 34.9mm to match common seattube diameters and different frame specs. Important attributes Function: brazeon derailleur adapter that accepts a bandon clamp to hold a brazeon front derailleur. Material: aluminum alloy construction for strength and dependable everyday use. Compatibility: two sizes (8mm and 34.9mm) to fit different frames and clamp systems. Performance: wider band clamp design improves clamping pressure distribution and stability under pedaling loads. Typical use scenarios 1. Upgrade a commuter or older road bike that lacks a brazeon mount so you can install a modern brazeon front derailleur without modifying the frame. 2. Swap components between bikes — use the adapter to test or temporarily fit a brazeon derailleur on a bike with only bandclamp fittings. 3. Bike or mobile mechanic installs — provide a clean, reversible solution for customers who want brazeon derailleurs on frames that don't have the mount. Practical notes Choose the correct size (8mm or 34.9mm) for your seattube diameter before installation. Tighten the band clamp to recommended torque for your band clamp and derailleur manufacturer to ensure a secure fit without overtightening. Aluminum alloy construction, two size choices, easy bandon installation, and a wider clamp for even pressure make this derailleur adapter a reliable choice when you need to mount a brazeon front derailleur on a frame without a brazeon mount.