Screw Anchor Expander for Greenlee Power Drill, 3/8" - 16 Caulking Part
Good Compatibility: 870 Screw Anchor Expander Compatible with Greenlee 84305 Power Drill Part for Caulking Anchor Size 3/8" - 16. Unscrew expander. Step 1: Drill hole of required size. Thread anchor screw on expander.