MODEL : TL050 CRANK MODEL : LJ201 CRANK MATERIAL : FORGED AL-6061-T6 CRANK FINISH : BLUE ANO BCD : 144MM LENGTH : 165-170MM CHAINRING : 42-53T CHAINRING FINISH AND MATERIAL : BLUE ANO+CNC,ALLOY CHAIN LINE : 46.5MM B.B.AXLE : 108