TZ50 Derailleur Mountain Bike Rear Gear Lever Governor $ 9.40 Product Details: Material: Alloy Color: TX35 rear dial (21-24 speed), TY300 rear dial (21-24 speed), M390 rear dial (24-27 speed), TZ50 rear dial (21-24 speed), M370 rear dial (24-27 speed) ), TY500 front derailleur (21-24 speed) Pattern: plain Weight: 400 grams Package Contents: Alloy governor X1
