Check the listing for details. 4 Pack Speed Cube Set, Speed Cube 2x2 3x3 4x4 Pyramid Magic Cubes Brain Teaser. Condition: New. Listed at 16.99 USD. 4PACK PUZZLE SET ( 2x2x2 ,3x3x3, 4x4x4, and Pyramid Speed Cube )STRONG, STURDY AND LONGER LIFE: ABS material, Made safe, third-party lab tested, BPA free and non-toxic; Stick-less smooth surface.EXCELLENT STABILITY: Great corner cutting, Tension adjustable; It doesnt lock up; Difficult to pop, comes pre-lubricated and tensioned;This cube can be used for international competitions.RECYCLABLE MATERIAL & VIVID COLOR: New color combinations are used for quick identification during a fast twist. Eco-friendly ABS material, non-poisonous material.BENEFITS OF SOLVING A BRAIN PUZZLE CUBE: (1) Improve your concentration; (2) Improve the hand-eye combination (3) Improve the spatial thinking increase IQ level (4) Keep the mind sharp in old age.THE PERFECT GIFT: Whether it is design or use, the feel is very good smooth and smooth, large angle cut corner, high fault tolerance Is a great cube.