Shimano 105 10 Speed Rear Derailleur
Advanced Wide Link design increases rigidity and shifting performance Super stiff for fast and accurate changes across the cassette. Large 11 tooth pulleys increase service life and reduce noise with super light shift action. Compatible with 10-speed drivetrains.
Perfect shifts and sleek, modern look... Like the title says "You can't go wrong".
my 105 group works flawlessly. i know why you would pay more, but if you are watching you pennies instead of your grams, then 105 is the way to go. top performance at a good price. and i like the black color scheme.