Model 34T or 36T or 38T or 40T or 42T or 44T or 46T or 48T or 50T or 52T or 54T or 56T Chainring shape Oval Offset, mm 2 (34T), 0 (36T-56T) Made from 7075-T651 Aluminum Alloy Surface coating Anodizing Made with CNC milling Ovality 12% Timing 108° after TDC (top dead center) Compatible cranksets 110 BCD (5-bolt) Weight, grams 48 (34T), 51 (36T), 54 (38T), 60 (40T), 68 (42T), 80 (44T), 90 (46T), 104 (48T), 113 (50T), 123 (52T) Chain compatibility 10/11/12-speed chains : including Shimano HG+ and SRAM AXS flattop (incl. T-type) chains Color Black or Blue or Gold or Green or Orange or Red or Silver or Violet