Drill a hole of 6 mm in the bottom hole in the board, hammer the ale plug with a hammer, and tighten the screw with + screwdriver. I used a variety of manufacturers, but the ale plug can fix the most firmly. Because it has a brim, it can be fixed firmly on the board. Of course it is also concrete. With products with collars from other manufacturers you can not fix in the board or turn around together. Maybe a little material is soft? The ale plug is hard and very easy to use.