Vintage Shimano AX-50 front derailleur with 1" clamp. It has a 14 tooth chainring capacity from large to small ring. The front derailleur incorportates the Trap-Ease Mechanism with unparallel links for a more effcient gear shift. Also the design of the mechanism allows the chain guide to be widened, thus reducing chain noise considerably. Works with 2 x 5 speed drivetrains.