WHS stands for Wall Hanging System.

This Master Block is what you screw into the wall where you want to hang a helmet or anything needing some form of hook. Then onto this Master Block you slide the hook of your choice and ta da! Then you can use any of my solutions for your wall hanging needs or design your own.

As a test I stuck one to a wall with some heavy duty double sided tape but I wouldn't suggest hanging anything with a fair bit of gravity on it without screwing it into the wall.