Improperly aligned frame or fork dropouts can cause bent axles and quick-release skewers, as well as tracking and shifting problems. The Frame and Fork End Alignment Gauge Set quickly determines whether the frame or 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 gauges adjust to compensate for various hub widths from 100mm to 160mm, too.