Grimm's Concentric Circles & Rings

Grimm's Concentric Circles and Rings, is a 20 piece building set containing both wooden disks and wooden rings. This is a large creative puzzle great for imaginative floor play. \nIn combination with other building blocks the building and creative possibilities are extensive and new ways of  building can be discovered over and over again. \nThe Concentric Circles and Rings are a perfect complement to Grimm's World of Numbers, Stepped Counting Blocks, and large stepped Pyramid \nThis product is recommended by the German "spiel gut" (good toy guide). \n \nComprises 20 pieces-10 large coloured rings and 10 large coloured disks. \nMaterials: birch ply wood, non-toxic water based colour stain. \nSize: diameter 2-20cm.