Park Tool FFG-2 Frame & Fork Alignment Gauge Set
Improperly aligned frame or fork dropouts can cause bent axles and quick release skewers, as well as tracking and shifting problems. The FFG-2 quickly determines whether rear frame or front fork dropouts are aligned and parallel.
If an error is detected, long handles and comfortable molded grips afford plenty of leverage for straightening. These Park Tool gauges adjust to compensate for various hub widths from 100 to 160mm.