JETSTREAM 4&1, a multi-function pen with a fine 0.38mm tip. - Brand: uni - Model Name: JETSTREAM 4&1 - Pen Tip Thickness: 0.5mm - Color: Blue - Functions: Multi-function pen (ballpoint pen, mechanical pencil) This was used for work. The eraser cap is missing. The logo of Churaumi Aquarium was on it, but it has peeled off. Price is not negotiable.