Review on Stylrtop Aluminum Bearing Derailleur Pulleys by Darnell Evans

Unlike most other Revain options, they come in pairs. They don't spin for very long, but that's to be expected as they aren't designed to do that (the chain doesn't need to keep spinning, unlike say a wheel). However, for their purpose they have very low friction and look great. They were larger than my old pulleys but the number of teeth is the same and they work great! The build quality isn't the best, but it doesn't bother me. The gold wears out after about 20 miles, but that's to be expected.