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 bearingsLarge surface contact area of ratchet provide improved durability and reliabilityRR11-12s XD32H12TAAlyBlk6B157UPC/EAN/GTIN: 7613052355016