Wood circles are made of natural pine wood with barks. The surface is smooth for painting and writing.They are are the best products for decorating homes and festivals. DRILLED HOLE andamp FREE STRING: log slice was drilled with small hole to hang easily. And each package have 8m jute twine string. WIDLY andamp EASY TO USE - You can write, sculpt, paint on the smooth wood slices. Every slice was drilled with small hole for you to hang easily. PERFECT TO MAKE DIY CRAFTS - Ideal materials for hand painting, pyrography, coasters, photo props, Christmas ornanments, festival decorations, wedding decorations, party decorations,wall decorations, making house number or dining table number, etc. 30Pcs wood rounds craft slice set - Diameter: 2.4"-2.8", Thickness: approx.5mm. Smooth surface, easy to write, paint and draw.