The Troy-Bilt 32CC 4-Cycle Gas Backpack Blower features an ergonomic compact backpack design to help reduce user fatigue. Generated by a powerful 4 cylce engine for more torque and no gas & oil mixing. Compression release starting makes pull starting easier. Blowing speeds up to 150mph/475cfm, large 20oz. fuel tank for longer use between fill-ups. Oil included in carton.