This is a new old stock (NOS) Campagnolo Super Record crankset from the 1980s. Crank length: 165mm? Chainrings: 52T x 42T? BCD: 144mm? Bottom bracket: Square taper (ISO)? Pedal thread: 9/16 x 20 Made from lightweight aluminum alloy, this classic Italian crankset is perfect for vintage road bike restorations or collectors seeking period-correct components. Please review the photos for details. Thank you for your interest. If that, please let us know within 3 days you got the item.