Assembly tools are designed to string and pull conductors, to tension tower auxiliary anchors, to compensate torsion between pulling rope and conductor. Surface should be from sharp edges as well as other damages that can cause noneffective handling ability or working reliability. The place of contact with conductor should be free from edges or scratches. At the conductor output from the pulling or come along clamp should have rounded edges to avoid damage of the conductor. Working load guarantees that assembly tools or any of their parts should not be permanently deformed.