Zoob Z Bricks - 30 PieceRecommeneded Age: 6+ Z bricks are your way to play with Zoob and traditional building blocks. Combine Zoob pieces with any popular building brick play sets. Z bricks are HALF Zoob and HALF brick. They easily connect, pull apart and can be re used over and over again. Z bricks swivel on their brick bases, which adds articulation and creativity. Includes 12 Z bricks, 3 of each of the 4 shapes Ball or Jaw end connection in either an upward or downward