Little Treasures Cube 12 Sided Layer Megaminx Speed Cube Puzzle, Assorted Color Perfect educational toy that will keep anyone busy for long periods of time Standard structure comes lubricated by the manufacturer, but the tightness is adjustable If the cube doesn't fit your style, just adjust the center screws Improves fine motor skills and dexterity while keeping them engaged for hours 3 x 12 rotating megaminx speed cube is designed for professionals