This CBN Wetstift can be moved like a pen into a chest pocket. It is a handy tool to get the grinding burr, however small, away. The diameter of the marker is 4 mm and the length is 5.5 cm. This makes all the guts on the inside to laws, including the whole small. For the laws of flat chisels or the outer surface of the guts you use the flat part of the marker. This marker is particularly suitable for making ring chisels and twist hooks with the laws. An important advantage of the CBN grinding agents is that they are shape and have an unprecedented lifespan!