GARBARUK 12-speed cassette Shimano-standard freehub (Special Order)Go Shimano 12 speed without replacing half of your bike With an ultimate solution from Garbaruk you can now have 12 speed Shimano drivetrain using regular Shimano HG freehub no need to use Micro Spline, which can result in replacing your bike wheels. Our no compromise solution lets you have incredible performance and drivetrain reliability without sacrificing your wallet and beloved bike wheels. Manufactured using high quality chromoly steel alloy