It might look normal from the outside but the engineering inside this incredible new chain design that makes possible a gear range previously found only in 2 chainring drivetrains and itrsquos also the biggest contributor to the eagletrade drivetrainrsquos ultra smooth precise durable and quiet performance the eagletrade chainrsquos links have a smooth radius with no sharp edges or chamfers which yield a significant reduction in noise friction and wear on chainrings and cassett