The YJ MGC Square-1 feels lightweight, yet ""planted"", with the majority of the weight focused in the center. The buttery smooth inner and outer layers are controlled by factory-installed moderate strength magnets.

For those who prefer a black side, you can easily install the included spare black pieces to change either the white or yellow side. We recommend tightening the puzzle out of the box.

Key Features
• Factory-Installed Magnets: Moderate strength magnets in the inner and outer layers
• Center-Weighted Feel: Lightweight, yet planted in the hand
• Spare Black Pieces: Swap the white or yellow side for black
• Adjustable Tension: Tighten with the included screwdriver