.850 SketchTwin Graphic - Black'
This is the On The Run SketchTwin Marker in Black. This marker is designed to be used for sketching and blackbook illustrations. Black is a common colors used when sketching, so it's a good idea to pick up a few of these markers for drawing in your blackbook. The .850 is designed to be used with the .830 and .840 marker sets. Also, this marker features a twin tip design with a .5mm fine point and a 9mm board tip.