This is a powerful cost-effective cube. Plastic material by CE safety certification; Using advanced technology exquisite workmanship PVC glossy stickers wear lubrication and flexible feel super top quality; High-strength nylon shaft with internal screw spring according to the tightness of the handle adjust the cube; All with large rounded corners + track design smooth and strong fault tolerance and reverse fault-tolerant (not rotating smoothly card) to enhance the feel and smooth rotation performance; With a beautifully packaged box instructions and illustrations cube solution; This is the latest series which Kathrine third order; High quality; Structural optimization smooth hand feeling; Fine and elegant workmanship; Performance can PK top professional cube