Brain Teasers Mefferts | Hollow Skewb Ultimate – Meffert’S Rotation Brain Teaser Puzz

The Hollow Series Presents An Intriguing, Innovative Advance In Twisty Puzzles.&Nbsp;The No-Core Puzzles’ Movements Are Unlike Anything Experienced By Even The Most Experienced Puzzle-Solver. With A Combination Of Inventive Gameplay And Stunning Design, Meffert Hollow Series Are One Part Gift, One Part Puzzle, One Part Treasure!