DT Swiss Ratchet Freehub Body - Shimano Micro Spline, Light, Aluminum, Sealed Bearing, Kit w/ End Cap, 12 x 142/148 mmRatchet freehub bodies have a gloss finish and don't have a seal, as this is fixed on the hub shell. The Ratchet System was the first of this type for DT Swiss; used in the mid range products like the 350 hubs. Includes end cap for 12 x 142 and 12 x 148mm hubs Fits Shimano 12 speed Micro Spline cassettes Crafted from lightweight aluminum Compatible with 12mm thru axles