• Compatible with: Greenlee 870 screw anchor expander; Anchor 84305 Power Drill Part; Caulking Anchor Size 3/8"-16.
• Material: Made of hardened alloy steel, powder coating on the surface, with higher strength, superior durability, rust and corrosion resistance, long service life.
• Function: Allow you to quickly and safely set expansion screws anchored to masonry, regardless of thickness.
• Easy to Use: Drill a hole with the required size, put anchor screw on expander, insert screw anchor into dilled hole, lightly tap the head of the expander with a hammer to secure the anchor to the wall, and then unscrew the screw of the expander.
• Size: Screw anchor bolt size: 3/8"-16; Minimum dimension of holes required: 3/4" Diameter x 1 1/4" Depth.