Extend your range, without emptying your wallet. Box Two^TM Cassettes are a quick and easy upgrade* for your existing 11-speed drivetrain, or the starting point of your long overdue 1x conversion. Ramped teeth and a gradual, linear progression help provide smoother transitions from gear to gear, while a massive 46 cog extends range to a respectable 418 percent (or 454 percent for the 50 tooth). Compatibility** with standard freehub bodies means this cassette is suitable for nearly any bike -- mountain, road, gravel, hybrid, fat bike -- you name it.