These building boards are the perfect complement to the 12 piece rainbows, tunnels and semicircle (10675/10676). So many wonderful balancing and skill games as well as new construction projects can be created, leading to even more open ended play. 11 parts, 7 x 10-37 x 0.8 cm , Lime wood, non-toxic water based color stain These building blocks are ideal for building landscapes with trees and hedges. In one image combined with the building blocks Sea-Owls Art.No. 11037. 16 pieces in cotton net. Materials: lime wood, non-toxic water based color stain. Size: diameter= 3-10cm, H=2-18cm.