Jiffy gasoline powered 4-stroke OHV engine. Powerful commercial grade engine; E-Z start in cold weather. Quiet - 4 stroke engine is quiet but powerful. Low maintenance - no mixing of fuel. HTT (high torque transmission) Jiffy`s proven heavy-duty clutch and optimum gear ratio transfer more engine energy for additional torque. Stealth STX - serrated ripper blade and power point blades last 2-3 times longer than other blades on the market cutting 25 percent faster. The STX blades have a 3 year limited warranty. Best warranty in the industry. 1-2-3 year limited warranty - 1 yr engine: 2 yr transmission: 3 yr STX blades. E-Z Snap blade protector. Ideal for initial drilling and redrilling of ice holes.