Exquisitely hand cut branch blocks made from recycled cherry and applewood branches. Freeform pieces come in precision-cut 2cm increments (2, 4, 6, 8 and 10cm) with large 2cm disks and bridges to support successful building and early math and metric system learning. Diameter of blocks varies. Typical set includes "Y" or forked pieces. Each unique set is carefully finished with flax oil. Tree Blocks come in a colorful, cotton twill, drawstring sack with attractive logo block. Ages 3 to adult. Safe & lab tested.