Environmental material Using the original ABS material: non-poisonous material, the color will never fade. Perfect Gift Whether you're trying to stretch your brain capacity or spending some leisure time with your loved ones, this would be a great gift for your kids. Our speed cube is the ultimate gift for kids, friends, family members, beginners and puzzle professionals.It provides hours of challenging and enjoyable play time, helps to reduce stress, exercise the brain and aids the development of spatial memory while promoting your hands-on puzzle solving skills. Attention Some cubes may have a little lubricant above for lubricating, please wipe it up and be assured that it's harmless to people. Tighten, Loosen : You can tighten the cube by opening the middle piece and turning the screw clockwise; you can loosen it by opening the middle pieces of every side and turning the screws counterclockwise so they go back in place.If the cube does not fit your style, just open the top piece and adjust it. (tighter or looser). Still not smooth enough for you? The cube can be lubricated with silicon-based oils for the silky-smooth gameplay you love.
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