The Connetix 18 Piece Rainbow Rectangle Pack includes three rectangle sizes designed to spark imagination and creativity! Exclusively designed to be the same length as two three or four standard Connetix squares connected together this pack will give your builds the extra stability and structure you need to create bigger more elaborate designs. With multiple connection points and strong magnets this pack will inspire children to use their imagination to create zooming ramps car tracks long roads towers and houses. The strong rectangles are also perfect for supporting bigger builds! Connetix is a quality open-ended toy growing WITH your child as they do and their play becomes more complex.