MoYu Weilong WRM 2021 3x3 Maglev Magnetic Cube is made from high quality plastic material, absolutely a great puzzle cube for your cube collection and has a magnetic positioning technology. Adjustable corner cutting tension tighten or loosen the center screw to adjust the tension, commemoration problem solving skills, pattern math skills, spatial awareness, perseverance and promote wonderful hand eye coordination, dexterity. Keeps your little one busy with hours of creative play, encouraging imaginative skills.