DescriptionMade of good quality aluminum alloy, lightweight and durable. Aluminum alloy bearing,super lubricating, noiseless. Positive and negative tooth guide wheelcan effectively inhibit the horizontal swing of the chain, so that theis more accurate, apply for most rear derailleur of eleven teeth in themarket.Features- Material: Aluminum alloy - Size: About 4.20X4.20X0.50cm/1.65X1.65X0.20inch - Adopting quality aluminum alloy, longer service life than similar product. - The product design conforms to the ergonomic design and is easy to use. - Aluminum alloy material can reduce drag force, which can improve cycling efficiency. - Positive and negative tooth guide wheel, no strange voice and faster speeding. - Stronger compatibility with flexible rotation. You can use it with confidence.
