D-FantiX Yj Moyu 5x5 Speed Cube- It's also known as one high cost performance cube on the market Corner cutting is pretty decent for this cube. Out of box, it is fast and offers smooth turning. Tension adjustable .Difficult to pop, good control of the cube. It seldom pops or locks up. If you are cube fan and like collecting puzzles cube, then don't miss it. Enjoy your good time with your family and friends. About Tensioning Tensioning is where you change the force of the springs so that the cube is looser or tighter. This is a very personal thing and you will need to play with the tensions on your cube until you get the one you feel most comfortable with. When you first get your 5x5 Speed Cube it will be set up to our preference, which may not be yours. Luckily it is extremely easy to tension the puzzle cube Underneath each of the middle tiles is a screw head. To tighten the tension on your cube screw it clockwise and to loosen turn it anticlockwise. Specifications Color: Black Level: 5x5x5 Size:63.5x63.5x63.5mm Weight: About 160g Packing: Original Box What's In The Box? 1x D-FantiX Yj Moyu 5x5 Speed Cube