For fans of shape-mod puzzles, the Cubing Classroom Mirror 3x3 V2 M Ball-Core UV (Golden) is the best upgrade available. This variant, which has a ball-core mechanism, improves stability through corner/core magnetization, making turning more controllable and enjoyable. In addition to adding a gorgeous reflecting appearance, the UV-coated metallic exterior surface increases grip for a superior solving experience. This cube provides a physical and visual challenge unlike any other because to its sophisticated mechanism, seamless magnetic turning, and striking appearance!