Premium 7-Piece Aluminum Burr Set for Coffee Grinders - Perfect for Espresso, French Press, and Cold Brew at Home or Cafe

This difficult burr is comprised of 6 pieces and it requires 7 moves to remove the first element. Each piece must be maneuvered in the correct order. This puzzle has internal voids and does not have a solid locking piece which distinguishes it from less difficult puzzles with the same external shape. Taking it apart is hard, but putting it back together is even trickier!