New unbranded rear derailleur hanger Dropout EXTENDER Hanger extension drops the rear mech by 23mm to allow the rear derailleur to work with a greater clearance and larger cassette sprocket. Similar to Wolftooth derailleur extender. It allows your short cage rear mech accept up to a 34T cassette instead of a 28T Suitable and fits Shimano Dura Ace, Ultegra, 105, Tiagra, Sora, Claris, XTR, XT, Deore, Altus, SRAM and Campagnolo rear mech bike equipment.
