| Designer | : | William Strijbos |
| Craftsman | : | William Strijbos |
| Category | : | Take-Apart |
| Material | : | Chrome-Plated Steel |
| The objective is to remove the washer. The nut will move only a little indicating there really is a pin holding it in place. This is one of my favorite puzzles by Will Strijbos. It is also very well made. | ||