This DT Swiss adaptor comes with a lockring. It's suitable for 15mm thru axles and QR wheels. It's the new model featuring a serrated washer. The serrated washer must be used with the CL Adaptor, while the lockring can be used independently on Centrelock hubs and rotors.

Using this DT Swiss Centrelock Adaptor is easy. First, if you're using it with a 15mm thru axle or QR wheel, make sure to attach the serrated washer along with the adaptor. The lockring can be used separately on Centrelock hubs and rotors. When installing, ensure everything is tightly secured to prevent any issues during your ride. For maintenance, regularly check the tightness of the components. If you notice any signs of wear on the serrated washer or lockring, it's a good idea to replace them to keep your bike in top - shape.