Zebra Sl-f1 Mini Ballpoint Pen - 0.7 Mm - Black Body - Black Ink Pen & Pens Refill Value Set(with Values Japan Original Discription of Goods) A slim mini ball-point convenient to carry It is the best for memo writing to a mini notebook. Convenient, since it can lengthen or contract Usually, 83 mm, if it lengthens, it will be set to 107 mm