The Flowpen. DOPE AS F**K! These markers are the sh*t. the violet is what i recomend if you writing on tunnels like white and sh*t shows up nice and hard to buff. i had a tag up on a tunnel and they tried to buff it and you could still see it. also bleeds through paint cuz they tried to paint another and it took 3 times to cover it. really good markers, easy to refill, shows up good, ink nice as hell, nothing bag.