DT Swiss Ratchet Freehub Body - Campagnolo 9 - 12s Standard Aluminum Sealed Bearing Kit w/ End Cap 12 x 142 mmDT Swiss Ratchet Freehub Body Campagnolo 9 12s Standard Aluminum Sealed Bearing Kit w End Cap 12 x 142 mm. Ratchet freehub bodies have a gloss finish and dont 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. TECH SPECS Cassette Body Type Campagnolo 10 11 12 Speed Cassette Body Type Campagnolo 9 Speed Material Aluminum Rear Axle Type 12mm Thru