The W.Y. International Quick Chuck has a unique self-centering design that makes it a simple, quick and precision brake lathe adapter for machining hubless rotors and drums on any 1" arbor brake lathe. The weight and mass of the Quick Chuck with backing plate virtually stops chatter and vibration in its tracks, while eliminating run-out and set-up problems. The Quick Chuck, with all optional accessories, allows machining of rotors and drums while centering holes from 2-1/8" to 5-3/4", from compact cards through 1-ton trucks.