• [Details] Screw anchor expander replacement part, numbered #868, fits anchor 84299.
• [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 1/4"-20. Minimum size of holes required 1/2'' Diameter and 7/8'' Depth.
• [Material] Made of high-quality steel material, durable and resistant to rust and corrosion, longer service time.