Review on Drywall Self Drilling Combination Hanging Decoration by Lamar Vanderburg

Half the time they flex when driven into the wall. It's best to use a small brass hammer and spend a good ten minutes hammering it into the wall. If you then manage to insert it into the wall, half the time the screw itself will break and rip off one side of the two-piece insert, destroying the device and making a mess on the wall. After all, removing them is *not* easy. Usually they break and half stays in the wall, forcing you to use a needle and then fill it with the regular drywall anchor you were trying to avoid. Good theoretical exercise, terrible failure in the real world.