Features1Adopts aluminum alloy material,high strength and corrosion resistance. 2Used to correct the rear derailleur hanger to check the transmission shifting problem simply and accurately. 3Telescopic rod,free to adjust the length. 4Measuring rod with telescopic design,easy to store and use. 5Suitable for most of bicycles.SpecificationFeatures:Adopts aluminum alloy material,high strength and corrosion resistance.Used to correct the rear derailleur hanger to check the transmission shifting problem simply and accurately.Telescopic rod,free to adjust the length.Measuring rod with telescopic design,easy to store and use.Suitable for most of bicycles.Specification:Color: Red / Black (optional)Material: Aluminum alloySize: (280-440)*160mm / (11.0-17.3)*6.3inWeight: approx. 277g / 9.8ozPackage size: 295*130*40mm / 11.6*5.1*1.6inPackage weight: approx. 355g / 12.5ozPackage List:1* Alignment CorrectorPackage List1* Alignment Corrector