Product name: Tail hook correction tool\n\nMaterial: 304 stainless steel\n\nPackaging size: 430X100X70mm\n\nWeight: approximately 1044g/box\n\nFunction: Used to calibrate the rear variable lifting eye to solve many transmission speed problems, especially in locating the rear variable speed system.\n\n(One built-in English instruction manual)\n\nFeatures: 304 stainless steel body, electroplated heat treatment, high strength, corrosion resistance, 360 \u00B0 rotation correction, CNC milling thread, tight fit, easy adjustment of measuring rod.\n\nThe 304 stainless steel diamond correction rod is made of 304 stainless steel material, electroplated and heat treated, with high hardness and corrosion resistance.\n\nLock the rotating rod, with precise threads and a tight fit. Rotate the positioning knob clockwise to screw the bolt in and lock it with the lifting lug.\n\nPress the sliding bracket to lock and adjust the distance between the measuring rod and the wheel hub. Measure the deviatio;