The two (2) types of guardrail systems are non-invasive and fixed. Non-invasive guardrail systems are freestanding, counterweighted and/or clamped. Fixed guardrail systems are invasive and directly attached to structure. Since no special tools, welding, bending or threading are required; the complexity of installation is eliminated. The guardrails are corrosion resistant offering exceptional durability. Both systems have the alternative to be manufactured in a powder coated or a galvanized finish.