MetalTech guard rail post with support is built with a rugged steel tube construction. This item is sold individually but 4 posts are required for each scaffolding set. Convenient wedge clamp on the support is easy to install by locking onto the attached scaffold frame. Guardrails Model Nos. M-MGR5 (SKU 770606) or M-MGR7 (SKU 770613) are not included must be installed along the perimeter of all scaffold structures of a height of 10 ft. or more to prevent accidental falls.