Tombow Mono 100 Professional Drawing Pencils

http://www.dickblick.com/products/tombow-mono-professional-drawing-pencils/

http://www.pencilthings.com/blog/tombow-mono-100-mono-r-and-mono-j-pencils-are-coming-to-pencilthingscom/

http://www.penciltalk.org/2006/09/top-japanese-pencils-the-mitsubishi-hi-uni-and-the-tombow-mono-100