NATURAL ORIGINAL: The wood circle is unique and made of natural pine with bark, so sizes vary but average between 3.5 to 4.0 inches and thickness is approximately 0.35 inches. Some wood bark may partially fall off the slice. ^Pre-sanded and polished: dried naturally and carefully cut into slices. Each disc is sanded to make the surface smooth and safe enough to use. ^EASY TO USE: Each disc is undrilled and has no holes, ready for artistic use. Easy to write or draw. We have also improved our drying technology and adopted scientific control of the moisture ratio in the wood trays to prevent the wood from drying out or cracking. ^Perfect crafts: suitable for any DIY project: hand painting, coasters, photo transfers, name tags, Christmas decorations, Christmas decorations, wedding decorations and more^