☆ Brand New, Unopened Nintama Rantaro Jetstream 0.7mm, Sixth Grade The popular Jetstream, known for its "smooth writing feel" and "vibrant colors," in the school year colors is now on sale! This is a very convenient 4-color ballpoint pen (black, red, blue, green) + mechanical pencil! The cute SD character print on the pen body makes it a ballpoint pen you'll want to carry around every day.