feature:
◎ Compact structure, reliable and durable ◎ Manual operation, suitable for high torque operation, but external power source or limited space ◎ Precision planetary gear range extender system, compact structure, durable, easy maintenance, range extender accuracy ±5% ◎ Equipped -Swivel device to improve the convenience and safety of operation ◎High torque/weight ratio, with manual torque wrench, can easily realize the precise assembly of bolts and nuts ◎By operating the reversing lever and button, it can be easily switched clockwise or counterclockwise .