I-xun&reg; Magic cube of Irregualr cubes, Smooth Megaminx Pyraminx Puzzle Cubes (Pack of 5) Genuine irregular magic cube pack, include Megaminx Pyramin mirror cube and so on. New structure design for both professional game and education. Smooth turning and cornering, highly recommended cube set. High performance designs with good value, Make the latest experience to the player. More than a pack of magic cubes, is a great pleasure to your family.