CONFAST 1/2\ (Inside/Screw 1/2\ - 13) Double Expansion Anchor (20 per Box)
- Allows for lag screw bolts to be installed into concrete, brick and block.
- Inserts into a hole by tapping with a hammer until flush.
- Lag screw expands the lag shield against the walls of the hole.
- Drill hole with masonry drill bit based on diameter on anchor.