Specification:  Material: Stainless Steel;  Length of Holder: 50mm;  Length of Blade: 19mm;  Blade Diameter: 0.9mm;  Blade Degree: 30°;  Color: Yellow Cap;  30°Blades for Cutting large fonts and thick materials which is about 1mm.     Features:  Tool consistency;  Materials with ultra - hardness, carbide, super - toughness, longer wear and edge grinding with ultrafine polishing, edge more;  Suitable for polishing wood, pvc mahogany color, precision, MDF and other relief.     Usage:  1.  Blade should not extend too long,generally within half a millimeter is better, while paying attention to extended balde longer properly when carve the;  small print, in order to avoid the blade holder take the carved strokes away. Suitably engraved small print with new cutter and slow down. 2. When the word carved with angular phenomenon,you should change the blade to eliminate the problem,if the phenomenon persists after change blade, it should be the holder problem;  3. When problem arise the blade holder,try a drop of oil in the bearing and rotate the blade several times to lubricate, if still unresolved, consider replacing the blade holder.     Package Included:  1 x  Blade holder;  15 x 30° Cutter Blades