UFO Plate Puzzle

About "UFO Plate Puzzle" directly from Bruns: A puzzle and a hiding place, designed to defy the standard rules of puzzling. Usually, you use your ears, eyes, fingers, and logic to solve a puzzle. But what will you do when none of these work? This is one step unique puzzle. Difficulty level: 10 of 10 (with sticker) 3 of 10 (without sticker) Main task: Open the puzzle. You can use it as a hiding place. Internal size: diameter 65 hieght 11 mm Can be used as hiding place Material: duraluminum and plastic. Size: 98x18 mm.