Qiyi - Valk 4 M (Strong)
The Valk 4 M is the first 4x4 in the iconic Valk line. It measures a compact 60mm across, making it more comfortable to hold and turn. When turning each layer slowly, the cube has a very comfortable, stable smoothness. When turning faster, there is a pleasant, slight hint of crunchiness. Corner cutting is quite flexible and is on par with other top 4x4's. Used and endorsed by world-class cuber Mats Valk himself, this puzzle is sure to please solvers from beginners all the way to seasoned professionals.
This version has stronger magnets.