Shimano 105 vintage groupset from the late 90's/early 00's. The rear derailleur specifically is 1056, which makes it an 8-speed. This set mostly came off of a 1994 Cannondale triathlon specific bike, so the shifters were actually Grip Shift, at the top of the lay down aero bars. These items being more than 20 years old do have their fair share of scrapes and bumps, but everything works flawlessly, all our parts are guaranteed.