Two sets of fraction circles. One rather small, one large. Both sets have full circle, and circles divided into halves, thirds, quarters, fifths, sixths, and eights. Fraction Pies -50mm in diameter and 5mm in height. The holders (1, 2, 4 pies) have depressions that are 2mm deep and 52mm in diameter. Fraction Circles are 106mm in diameter and 5mm in height. the holder has a depression 2mm deep by 110mm in diameter.