Amazon カスタマー 5 It looks good and there were no issues when installing it. Also, now that I have a new chain and a new rear cassette/sprocket it all works well. I watched quite a few YouTube videos on how to install and the benefits of a 1X10 drivetrain, but no one ever said that you will need a new chain and rear cassette/sprocket. Maybe that's just common sense for bicycle mechanics. The drivetrain gets old together. A new rear derailleur wasn't needed, but that will be next year's upgrade.