genuine Shimano Dura-Ace 11-25 tooth 10 speed Titanium and Steel bicycle gear cassette, model #: CS-7900, the largest 5 sprockets ( 17t - 19t - 21t -23t -25t ) are Titanium, the smaller 5 sprockets ( 11t - 12t - 13t - 14t - 15t ) are Steel, minor wear throughout, teeth edges are still sharp, undamaged spacers and threaded lock ring included. meticulously cleaned, see pics - both sides of all sprockets shown. Can Ship $40. complete ( * Price Drop * Was $65. - I found a Recently Listed comparable on eBay for a much lower cost ) If you reply to this listing Don't Forget to CHECK YOUR SPAM FOLDER along with Your Inbox for my response! Will meet serious buyer at mutually convenient location.