These robust wooden rollers are ideal for use with clay and play sand. With these unique rollers, it's extra fun and challenging for a child to use their imagination. You can connect shapes or combine different rollers in a fun way. Endless playtime fun! Size: 6 cm Material: Beechwood Note! This is a product made from natural material, so the grain and shade of the wood may differ from the image. The rollers are not suitable for magnetic sand, only for modeling/play sand! Cleaning tips: You can wipe the rollers with a slightly damp cloth after playing. To remove any clay that remains, it's best to use a firm brush. Want to use the rollers for cookie dough? Use plenty of flour to prevent the dough from sticking to the rollers. Let them air dry after cleaning.