Rubik's 3x3 Speed Cube Pro Pack
The Rubik’s Speed Cube is fully tensionable and provides maximum customizability, which has never been seen before on a genuine Rubik’s Cube. Ever have the problem of just not being able to get the right tension on your cube? That’s why Rubik’s have not only made it easier to change your tensions, but have provided three full sets of different strength springs. These springs mean you can find your perfect tension, allowing you to be faster than ever.