This vintage pencil from the Bell System features a telephone dialing top that adds a unique touch to your writing experience. With a lead diameter of 1.18 mm and a lead grade of HB, this mechanical pencil is perfect for everyday use. The pencil is made by Dur-o-lite and has a continuous twist style. It is a collectible item that is perfect for fans of vintage writing instruments. The pencil is made in the United States and is in great condition.