The Park Tool Wheel Dishing Gauge is an essential tool for ensuring proper wheel alignment. It accomplishes this by accurately measuring whether the rim is centered between the hub locknuts. Compatible with nearly all road, mountain, BMX, and cruiser wheels, the WAG-4 helps identify the need for dish adjustment to maintain optimal performance and safety. Its sliding spacer blocks allow for precise measurements even with the tire still mounted. The Park Tool Wheel Dishing Gauge helps riders align wheels at home or at the shop.