Discreet Pipe is secretive and stealthy. Metal pipe is revealed upon pulling bottom of marker open. Top cap is removable to show an actual highlighter tip. Highlighter is 5 inches long and the pipe inside is 3 inches long and made of metal. The highlighter pipe is also known as the marker pipe and both look the same. This one in particular looks like a very real highlighter or marker. The black marker has a bar code, adding to the realism of being a highlighter/marker. This is considered a stealth pipe. Colors may vary.