Cubelelo QiYi QiYuan S v2 4x4 is an upgraded lightweight speed cube with a very low price point. It is budgeted 4x4 that is best suited for beginner/intermediate solvers. It feels stable yet smooth right out of the box. The stability of this cube is phenomenal and rotations are very smooth which makes this item quite appealing. This 4x4 comes tensioned and pre-lubed, however we recommend Cubelelo Lubricants for more lubrication and performance. Made of solid ABS plastic it is safe, wear-resistant and durable.