Guess what it is? If you want

An instrument holding graphite that had changed the way students write forever. Within its slender, metalllic casing is precision and simplicity requiring delicate movements. The exterior is a smooth, sleek and a thin cylinder, concealing the infinitely replenishing graphite within itself. Each click brings forth more graphite, defying the normal laws of our traditional pencils that need to be constantly sharpened throughout the day.  The mechanism within, holding its gears and springs which is used to bring out the graceful, amazing and useful graphite component. The biggest surpirse about this instrument is the amount of reliability is has, as long as it is taken well care of and used to it’s fullest potential. It faithfully uses a slender, unbroken piece of graphite to bring life to paper, blurring out the boundaries between arts and sciences with us being the artist, free to put down whatever comes to our mind whether it guides us or we guide it.  In this world, this instrument of pure innovation is used to create lines that will leave us wondering the vast potential it can be used for.