The Nitram Sharpening Block for Charcoal is the ideal tool for sharpening your Nitram charcoal or other drawing materials. It features a long wooden handle with a sharpening pad to the end. The sharpening pad is 180 grit. An extra set of replacement two pads is also included.
It is approximately 230mm in length, including the handle. A pack of 5 Replacement pads for the Nitram Sharpening Bloc is also available below.