Industry Nine Torch Micro Spline Freehub The new Micro Spline freehub is required to run Shimano's new 12-speed drivetrain. If you have an Industry Nine Torch hub and want to run Shimano's new XTR groupset, you'll need this Micro Spline freehub to make a proper conversion. Complete Kit: Includes freehub, pawls, springs, and end cap Conversion Kit: Includes feehub and end cap (pawls and springs not included)Features Compatilbe with Shimano XTR 12-speed cassettes (offically approved by Shimano)Ceramic bearing option available | Industry Nine | Torch Micro Spline Freehub Microspline, Qr Conversion Kit