Material: Wood.Made from thin durable wood, eco-friendly, safe and reusable, intended for chalks. Hole is universal sized and will work with all standard door knobs. When you need some quiet and space,it is good choice . Hang on your bedroom door ", "Please knock" sign or "Seeping" tag, And keep the little trouble makers out. Suitable to use for reminders, such as "Party tomorrow" or "Pickup at 4:00" and leave them on your kitchen cabinet knobs - you will for sure not miss this. These Door Knob Hanger Tags offer a unique way to label kids bedrooms: as boys, girls, baby Room.... toy closets, kitchen cabinets. Use them to write lovely messages to family or friends in a different way! Colour: Black Material: wood Package Contents: 6 * Door Sign Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.