This is a pickleball paddle holder. I've made one with 6 glued magnets that are 12x3 from Amazon. I've also made one that uses #6 wood screws. There must be something behind the paddle to support the head such as a wall if you screw it to a wall or similar. If you attach this and there is nothing to support the back of the head the paddle will flip backwards out of the holder. It works great with every paddle I've tried. With a neoprene head cover some paddles don't sit correctly. Print with the small bottom opening down as they are pictured not as the file will appear in the slicer.