Cassette and Chain wear in bicycles and extended chain life due to Graphene lube

Need to replace the original Shimano Ultegra Cassette CS HG 800 11 after completing 21751 km on it. Cassette developed ticking noise on my favorite gear from 5000km onward and spread to most of the other gears during its lifetime. My chain Shimano Durace CN HG901 11 also need to replace as it reached 0.5% wear after riding 9308km. This chain lasted 50% more than previous chains due to use of Graphene lube from the bigining. Purpose of this vedio to compare Brand new Cassette and chain againest the worn ones