brand new monochrome building boards by award winning toy company Grimm's Wooden Toys. 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.