1. Flail mower with gasoline engine of 13/15HP, to be used as an ATV mower. 2. Engine brand includes Jiangdong or Honda types. 3. Electrical power start can be available as choice. 4. Precise dynamic balance to be done on the blade shaft with blades on, unbalance weight less than 30g. 5. CE Approved. 6. OEM accepted.