Grimm's Ecksteine Cornerstones

A very special set of building blocks. This set allows for a constant stream of tricky and surprising ways to arrange the blocks, which help to develop spatial awareness. A wide variety of colour patterns can be used to create ever-changing and unique shapes. When combined with Grimm’s classic building materials, the corner blocks really come into their own, as they can be used to create a wide variety of ball tracks.