DT Swiss ER 1600 Spline db23 Rear Wheel - 700, 12 x 142mm/QR x 135mm ,6-Bolt/Center-Lock, HG 11, BlackBuilding a wheel that performs well anywhere is the idea behind the ER 1600. The wide rim and superb ratchet drive system bring traction and reliability into the mix and provide a wheel that is perfect for year round riding on road or mixed terrain. The 23mm rim height offers a better climbing wheel while the 32mm height is a stout for those that are hard on their wheels. 350 based Spline hub with 18t ratchet system Straight pull hub and spokes are