MODEL : TL051 CRANK MODEL : WTX-9 CRANK MATERIAL : FORGED AL-6061-T6 CRANK FINISH : ABK BCD : 144MM LENGTH : 165-175MM CHAINRING : 42-53T CHAINRING FINISH AND MATERIAL : HBK,ALLOY CHAIN LINE : 46.5MM B.B.AXLE : ISIS 108