Engraving to emphasize details such as panel lines, or even add custom detail is a popular advanced modeling method. Tamiya makes this advanced modeling technique easy with its line-up of engraving blades. These fine engraving blades are made from tungsten carbide, and offer a smooth, consistent finish. They are available in a choice of 4 thicknesses to meet your modeling needs.Item Contents/Information Fine Engraving Blade x1 Total length: 25mm. Shank diameter: 2mm Recommended for use with dedicated holder Item TAM74139 Engraving Blade Holder. Also, compatible with Fine Pin Vise D (Item TAM74050) and D-R (Item TAM74112) Simply hold at a 45- to 60-degree angle and pull lightly across the surface to score it. Repeat as necessary to achieve a clearly-defined result Each blade comes in a case that can hold up to 10 blades A color-coded marking on the shank allows easy identification of blade thickness