Excellent quality and perfect. Fast delivery and very good communication.
Works, but probably not as well as just an old front derailleur. There is no fine tuning of the position and the locking system is just a bolt that digs into another part of the guide. Luckily I didn’t do it up tightly until after all the trial and error of positioning. Since then, my chain has not come off. It does skip occasionally, which it never did with the derailleur