This product is an adjustable tool pen made of metal materials. It is mainly suitable for drawing straight lines and can help you create beautiful straight lines. It is suitable for professional and personal to use. Features -Color:Assorted Color -Material:Metal -Size(pen):13.00X1.00X1.00cm/5.11X0.39X0.39in -Size(eraser):7.00X5.00X1.00cm/2.75X1.97X0.39in - The pen tip is durable and wear-resistant, which is not easy to rust and break. - The handle is using an ergonomic handle, which is comfortable and easy to hold and operate. - Adjustable design, you can adjust the tightness according to your drawing requirements. - It is very suitable for ruling lines and drawing with ink or other drawing liquid or thin paint. - The drawing pen is specially designed for line drawing, professional and practical, which can well meet your needs. Package list: 1 4 x erasers