WHY CHOOSE ROXENDA SPEED CUBES?? SUPER ELEGANT Do not organize specially, put, it can form a beautiful scenery line simply? EASY TURNING & SMOOTH PLAY Improved anti-pop technology and structure for extremely fast and smooth cornering,provides a firm but not too tight grip? BENEFITS of SOLVING PUZZLE CUBE Improve child's grip, hand-eye coordination, vision Release people's life and work pressure Exercising elderly people brain, improving memory and practicing hands-on dexterity skills.? SINCERE SERVICE Each product will be checked by manufacturer before shipping. Roxenda will always provide the best product excellent pre and after service. We promise all questions will be respond within 24 hours, 30-day money refundguarantee and lifetime replacement warranty.Specifications: ?Speed Cube Size: 2x2x2: 50 x 50 x 50mm 3x3x3: 56 x 56 x 56mm4x4x4: 60 x 60 x 60mm Pyraminx: 95 x 95 x 95mm?Weight: About 400g ?Material: ABS material?What?s in the Box? 1 * 2x2x2 Speed Cube 1 * 3x3x3 Speed Cube 1 * 4x4x4 Speed Cube 1 * Pyraminx Speed Cube 4 * Solution GuideWarming Tips 1.Because the speed cube is made up of small parts so as not to hurt after breaking,the children under 3 years old play it that need to be accompanied by their parents. 2.These speed cubes can be disassembled, but beginners should not try to open it,so as to avoid unrecoverable 3.Some speed cubes may have a little lubricant above for lubricating, this is normal.Please wipe it up and be assured that it's harmless to people. When you screw it hard, you can try lube.