How to assembly Sprocket Chainflow with E-Chainguard Nut

https://www.mirandabikestore.com/chai... The set of double protection Sprocket ChainFlow with E-Chainguard Nut is attached directly into the Bosch motor and provides a robust protection to the chain and chainring, while also preventing chain drops. Incorporating the patented ChainFlow® technology, these chainrings have the best and the most long lasting chain retention available today.