Magnification Blocks - Set of 6These hardwood magnification blocks have smooth, rounded edges and safe acrylic viewing windows. The durable wooden frames are perfect for young children to hold or stand up while they find all sorts of interesting items to get up close with. The magnification of each acrylic lens is 2X. Largest block measures 18 cm along each side, and 5 cm deep. Sold in a set of 6 blocks. Suitable for children aged 2+ years.