You can read more about Grimms and their manufacturing process here.
Number of Pieces: 7cm diameter
Material: Made with European harvested Maple wood. Coloured with non-toxic water-based stain and finished with plant-based oil. All colours and oils used are certified in accordance with the EN 71 and CPSIA/ASTM 963 standards.
Care Instructions: For care simply use soapy water with a damp cloth for cleaning. Dry immediately. Please do not submerge in water and do NOT use disinfectant or hot water.