Especially suitable for sand, gravel and soil in the narrow deep channel, and the edge of groundwork, metope and pier. 1. The open wide base is available for the clean by oneself. 2. Convenient for the transport with wheel, wheel assembly (optional). 3. The front turn-up base is convenient for approaching the corner. 4. The closed strap can prevent the sand entering into the machine. 5. Efficient shock mounts foot can reduce the vibration of upper engine&handle.