Rear Derailleur Hanger Hook Aligner Alignment Tool Maintenance Corrector Bicycle Gauge Red + black

Description

360° rotation, using a unique structure, telescopic measurement, more convenient and faster, smaller volume, lighter weight. Easy to Move: Measuring rod is easy to move freely and the guide rod can move automatically and can be taken out. The main body is made of aluminum alloy. The CNC cutting technology for integrated forging processing, not easy to rust and deform.