As accessory for the 4 / 6-inch single handed, the motor and motherboard have been deeply designed to perfectly fit the body Whether it ' s replacing damaged parts of old devices or upgrading the of existing chainsaws The motor is deeply adapted to the motherboard, optimizing the power transmission paths to achieve efficient utilization Compared to ordinary chainsaws, it reduces energy consumption by 25% and can complete more cutting tasks with the same amount of electricity The cores components of the motor have undergone continuous aging testing to ensures stability and durability; The motherboard has undergone simulated switches testing and its remain well Brushless motor design, 21V high-power output, providing strong power, and extending the lifespans of traditional brushed motors by three times Addressing efficiency issues for users during logging and pruning, suitable for horticulture enthusiasts and professional forestry workers Suitable for various scenarios such as home yard tree pruning, small-scale wood processing, outdoor camping wood processing, and more, it is a powerful tool for gardening enthusiasts, woodworking practitioners, and outdoor explorers, Manufacturer: SHANGYAKEJI