QiYi Cylinder 3x3 Stickerless High Speed Cube Smooth Turning Barrel Cube Puzzle

Magic Cube Made of Durable and Environmentally Friendly Abs Material, Environmental Protection, Non-Toxic, and Safe. Frosted Surface, Increases Resistance, Easy to Hold, Does Not Scratch.
After Opening the Middle Cover, You Can Adjust the Tightness of the Screws According to Your Preference to Meet the Different Needs of Players. Smooth Running Without Slowing Down.
Cylindrical Shape Makes the Speed Cube More Interesting. So You Can Take It Out and Keep the Fun Going. You Can Enjoy It While Passing the Time on a Lazy Afternoon.
Magic Cube Designed to Increase the Intelligence of Children, Reduce the Workload of Adults, and Help Prevent Memory Decline of the Elderly.