Used Shimano Ultegra RD-6800 11 speed rear derailleur. Works like new. A few scratches and dings, the normal wear and tear for a used derailleur with a little over 700 miles on the clock. It will accommodate up to a 30-tooth large cassette cog with some adjusting, will shift perfectly on an 11/28 cassette. I took it off of a bike running a 39/53 11/28 11 speed drivetrain that got upgraded to a 1 x 12. Please ask any questions, and sorry, no international shipping.