The lag screw can then be installed with a wrench or socket tool.
Short Lag Shield, 1/4" Dia, 1" L, Alloy Steel Plain, 50 PK Size: 1/4 inch X 1 inchAllows for lag screw bolts to be installed into concrete, brick & blockInserts into a hole by tapping with a hammer until flushLag screw expands the lag shield against the walls of the holeDrill hole with masonry drill bit based on diameter on anchor. The sides of the lag shield push out against the inside of the hole once the lag screw is installed, thereby locking it in place. After drilling a hole into the material, lag shields should be tapped into place ribbed side first until flush with the surface.