This is the Park Tool WAG-4 Wheel Alignment Gauge for 16-29 (" Wheels. For a wheel to perform properly, it is important for the rim to be centered between the locknuts of the hub, or "dished". To check this, and to make precision adjustments, a wheel alignment gauge (also called a "dishing tool") is a must. An accurate and truly versatile wheel alignment gauge that belongs alongside every truing stand. Features: The WAG-4 allows easy checking of the dish on road, mountain, or BMX wheels from 16" to 29" (ISO rim sizing of 305-630) Can be accurately used with the tire still on the wheel Disassembles quickly for storage or travel and works with all hub types Works with any hub width Accurately gauges dish on 16" to 29" wheels
