Park tool centering gauge 1554 1as a manufacturer of bicycle specific tools since 1963 you can safely rely on park tools many years of experience the worlds largest bike tool manufacturer is the first choice of professional and home bicycle mechanics around the world featuresthe 1554 1 represents a dished rear wheel to assist in centering the ts 2 truing stand the 1554 1 will help align the ts 2 stand but for accurate work with the ts 2 working with a dishing tool such as the wag 4 or wag