ENSURE FAST SPEED: The positive and negative tooth guide wheel won't make some noise and guarantee the faster speed.
PREMIUM ALUMINUM ALLOY: This bike derailleur pulley adopts quality aluminum alloy and ceramic material to ensure durable to use. It also can reduce drag force which can improve cycling efficiency.
COMPATIBILITY: This product is compatible for most of rear derailleur on the market and adjust to 7/8/9/10 speed and fit 4/5/6mm screws.
LIGHTWEIGHT: Since its high quality material,the Jockey wheel rear is portable and lightweight.
GUARANTEE? If you are not satisfied with our product you received, you can send emails to us at any time. We will reply you instantly and help you solve your problem.