Features and Benefits: Economical, low speed buffer with 7/16″ hex quick change chuck; Includes Rear Exhaust muffler and Whip Hose; For Inner liner buffering; Kit Includes: 1 – Tire Buffing Tool 1 – Quick coupler adapter 1 – 2.5″ buffing wheel (3059TB-01); Air Pressure: 90 PSI;