A brand new budget 4x4 released from YJ Toys. YJ are known for their vast range of budget, mid-quality puzzles. The Rui series of puzzles are just that, budget and mid-quality. Not great for professional speed solvers but the absolute perfect cubes for all beginners and those on a budget. Here, we introduce the all new YJ RuiSu 4x4, released in early 2019.