It is suitable for reinforced concrete sleepers of railway lines, loosing or fastening the nuts of elastic fasteners.

The output torque is accurately and constantly.

It can be loosen or fasten two nuts at the same time.

The vertical height of the machine can bi adjusted.

It has good insulation, safe and reliable, leave the rail conveniently, easy operation, and high efficiency.

Compact and reasonable structure, small Dimensions, light weight, and easy to operation and maintenance.

All gears are made of high quality steel.