Features: MTB 6-speed system, Spoke protector option available, suitale for most kinds of bikes like mountain bike, road bike, folding bike, kids bike, tricycle, hybrid bike etc.
Gear combination: 14-16-18-21-24-28T.
Material: Made of high quality chromium-molybdenum steel, which has better wear resistance, corrosion resistance, low temperature resistance. Hollow weight reduction, smooth transmission, quick installation.
How to Identify Freewheel or Cassette: 1. Count how many teeth the smallest piece of the freewheel/cassette is, and the cassette is generally 11 or 12 teeth; 2. Remove the freewheel/cassette, if there is column foot on hub, it will be cassette, and if there is no column foot and it has screw thread inside, it will be freewheel.
Note: We provide excellent customer service, please feel free to contact us if there is any question.