Shimano XTR from Derailleur from a 2 x 10 M985 groupset. this is an E-Type / Bottom Bracket mount (there should also be a screw / boss on your seat tube to mount it). Three settings for 40 / 42 / 44 tooth big chainrings. Dual Pull for top or bottom cable routing. Lightly used, but with some chain marks on the blank coating on the mounting plate - please see pictures. Still working well with strong spring and smooth pivots.
