The QiYi Thunderclap 4x4 is a new, highly-anticipated release in the Thunderclap line by QiYi MoFangGe. Every layer of this puzzle is smooth and buttery out of the box with extreme controllability. After slight adjusting and lubrication, corner-cutting is enhanced and the chances of locking up are decreased. This 4x4 is the perfect choice for any speedcuber and even stacks up against higher-end competitors. Like the other cubes in the thunderclap series, the Thunderclap 4x4 delivers on premium performance and features at a mid-tier price.