RO-M8000-C-10601B406 - First R-M8000 Narrow Wide Oval chainring, 36T, 96 mm asymmetrical BCD, CNC AL7075, for Shimano FC-M8000/7000/6000 cranksets. -

RO-M8000-C-10501B406 - First R-M8000 Narrow Wide Oval chainring, 34T, 96 mm asymmetrical BCD, for Shimano FC-M8000/7000/6000 cranksets, CNC AL7075. -

R-MH1-C-11001-B407 - First R-MH1 Narrow Wide chainring, 40T with 104 mm BCD, CNC AL7075 construction and 4-bolt fitting. -

R-MH1-C-10401-B407 - First R-MH1 Narrow Wide chainring, 32T with 104 mm BCD, CNC AL7075 construction and 4-bolt design. -

R-MXX2-C-11001-B406 - First R-MXX2 Narrow Wide chainring, 34T with 94 mm BCD, for SRAM cranksets. CNC AL7075, 4-bolt. -

R-RT1-C-11401-B406 - First R-RT1 chainring, 50T with 130 mm BCD, for CX and road cranksets. CNC AL7075, 5-bolt narrow-wide design. -