Thank you for viewing. I'm selling this because I have a favorite ballpoint pen at home. It seems to have a cool function that allows you to switch between black, red, and a mechanical pencil depending on the weight! From the official website: This is a multi-function writing instrument that combines a black and red two-color ballpoint pen and a mechanical pencil in one body. In addition to the high-quality metallic body, the non-slip cuts on the grip are a distinctive feature. Shaft: Aluminum / Matte Alumite finish - Brand: SAILOR - Model Name: Marchant JP - Type: 2-color ballpoint pen + mechanical pencil - Color: Silver - Accessories: Comes with a box