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 Speed - 10 Speed Discipline - Road Discipline - Time Trial and Triathlon Size - 34 teeth Bolt Circle Diameter - 110 mm Chainring Fitting - 4 Arms