7075AL oval rings intended for use during training sessions where weight is not a factor Compatible with Shimano Dura-Ace 7900, 7950, Ultegra 6750, Shimano 105- 5700, Tiagra 4650, FSA, Rotor 3D & 3D+, S-works and many more cranks Also fits Sram Force and Red but NOT compatible with Sram cranks that have 1 hidden chainring bolt (Force22, Red22) Same great quality as AB`s other rings with less machining and detail which passes the saving on to the end user Allows use of an oval small ring with a round large ring, or 2 oval rings Reduces stress on knees and helps to maintain your legs fresher for longer 110mm 5-bolt 34T 7075AL Grey 1/9/10/11/12sp Standard