Breez 21046 R2 Propane Tiller Cultivator - 40cc 4-Cycle Engine, (CARB Compliant) Propane- no more stale gasoline that gums up your engine. Fewer repairs and maintenance is a breeze Efficient- Runs times of 1 to 1.5 hours per standard 1 lb. bottle of propane, depending on soil conditions and throttle speed Nimble- Extremely light weight and nimble in the garden. Excellent for maneuvering in tight spaces and closely around delicate garden plants Sturdy- Rigid U-Turn handle bar design for vibration dampening and solid control of the unit Quiet and Clean- Quiet and clean running engine. Cleaner exhaust without the stink of gasoline combustion