These work fine though on narrower boards if you don't hold it just exactly straight, and know exactly where you want to nail, they sometimes go in slanted and stick out the sides.  I had to forcefully remove those with pliers and try again.  But, they hold your nailing needs very securely, and it's a LOT easier to use these instead of hammering them in.  I will buy more and use these or other sizes of the same brand whenever I can to avoid using a hammer.