The Shimano FC-4700 Tiagra 10 speed chainrings are the perfect replacement for worn or damaged chainrings The chainring teeth have been developed to work only in conjunction with Shimano HG 10-speed chains for improved contact providing more efficiency and improved power transfer Genuine Shimano replacement chainrings for the FC-4700 Tiagra cranksets available in 52T, 50T, 48T (Outer ring), 36T, 34T (Inner ring) Shimano part numbers: 52T-ML – Y1RC98060, matches 36T-ML – Y1RC36000, 50T-MK – Y1RC98050, matches 34T-MK – Y1RC34000, 48T-MK – Y1RC98070, matches 34T-MK – Y1RC34000 Compatible chain Shimano HG 10-speed