1. Suitable for tight lines in the line construction, adjusting the arc, pulling lines and other work

2 Installation equipment for power, ships, transportation, construction, ore, post and telecommunications, communication and other departments

3. The lifting effect of small items, the traction of the machine, etc., especially in the small workplace, field, high -altitude operations, and traction from different angles.

4. Small strength of handboards and effort at work

5. Small volume and light weight are more convenient