This kit contains 75 of the 5 slightly different pieces, which snap together in 20 different ways. Each piece measures 6.5cm in length making them easy for small hands to use. Zoob is an open-ended building system and it’s ball and socket units easily snap, click, slide and pop to form creations that go far beyond stationary models. Their robust design makes them virtually in-destructible and inspires hours of creative building. The Kit contains: 75 x Zoob pieces and an instruction/ideas leaflet.