Feature: The product is made of tungsten steel, high hardness, wear resistance, and is not worried about the rapid abrade of the blade. The surface of the knife is blue-plated, the surface is smooth and beautiful, and it has better corrosion resistance. The product is used in CNC engraving machine to realize two-dimensional and three-dimensional engraving functions. The product is suitable for engraving hardwood, MDF, acrylic, plastic board, etc. The exquisite workmanship ensures that the product can cut materials well when it is used for engraving. Specification: Material: Tungsten steel Knife tip: 25 Knife tip diameter: 0.1mm 0.2mm 0.3mm(Optional) Surface treatment: Blue plating Product length: 38mm / 1.5in Package list: 10 * Engraving Knife Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product.