[Function] Works to secure expanding screw anchor into masonry quickly and safely.
[How to Use] First drill a hole, insert the screw anchor into it, tap the head of the expander with a hammer until the anchor is firmly fixed on the wall, then unscrew the expander.
[Dimension] Screw anchor of 3/8"-16. Minimum size of holes required 3/4" Diameter and 1 1/4" Depth.
[Material] Made of high-quality steel material, durable and resistant to rust and corrosion, longer service time.