Design: this kind of pen holder can fix the short pencil well, let you save the short pencil, avoid unnecessary waste, meanwhile the round design is more comfortable and convenient for long time holding Product material: as pictures shown, the main material are aluminum alloy and wooden, and durable, can accompany with users for a long time and not easy to be broken Suitable for: this writing tools can be applied by students, workers, writers, artist, and such people who need to apply pencils, color pencils and crayons, these pencil extenders are perfect helper to adjust the length for their using Portable size: the diameter is . 0.39 inch, and the length is 4 inch, suitable for most common size of pencils, even crayons and color pencils Colour:Wood color Material:wood Size:12.5x 0.88cm Package Contents: 12 x Wooden pencil extenders 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.