The new 240 MTB series featuring new EXP ratchet technology (rear only)Newly redesigned press-fit end caps allow easy tool-free maintenance and conversionContact free seals and high precision build guarantee smooth bearingsRear hubs feature 36T ratchet mechanism with 10° engagement angle for instant transferLarge surface contact area of ratchet provide improved durability and reliabilityStraight pull spoke interface for improved handling and performanceRR11-12s Cass28H12TAAlyBlkCL148UPC/EAN/GTIN: 7613052356471