The ___ anchor consists of an expansion shield and a cone-shaped, internal expander plug.

The ___ anchor consists of an expansion shield and a cone-shaped, internal expander plug.

• A. Drop-in
• B. Expansion shield
• C. Sleeve
• D. Masonry

Answer: (A)

Drop-in anchors in concrete rely on an expansion shield paired with a cone-shaped internal expander plug. After drilling a hole, you drop the anchor in and drive the expander plug into the shield. The plug’s cone shape pushes outward as it moves in, expanding the shield against the hole walls and locking the anchor firmly in place. This combination—an expansion shield plus a cone-shaped internal expander plug—is what defines this type of anchor. Other options don’t fit because an expansion shield on its own doesn’t create the expansion, a sleeve-style anchor uses a different mechanism, and masonry refers to the material rather than a specific anchor design.

Drop-in anchors in concrete rely on an expansion shield paired with a cone-shaped internal expander plug. After drilling a hole, you drop the anchor in and drive the expander plug into the shield. The plug’s cone shape pushes outward as it moves in, expanding the shield against the hole walls and locking the anchor firmly in place. This combination—an expansion shield plus a cone-shaped internal expander plug—is what defines this type of anchor. Other options don’t fit because an expansion shield on its own doesn’t create the expansion, a sleeve-style anchor uses a different mechanism, and masonry refers to the material rather than a specific anchor design.