Anchor connectors secure lanyards and anchors to structurally sound components (like a beam, wall, or roof). You can secure concrete floors and walls with concrete anchors. Fall arrest devices are tied off to structural steel (such as I beams, H beams, or pipes) with steel and beam anchors. Workers are safe on wood, steel, concrete, and raised seam roofs with roof anchors. An aircraft uses vacuum anchors because they can't be penetrated. Jamb anchors don't require permanent connections, so they won't damage walls. All sides of straps and cable anchors have loops or rings. Freestanding anchors are used near edges or in open rail yards instead of overhead anchors.