Cutting Edge Diameter: 0.8 - 3.0mm (0.8/1.0/1.2/1.4/1.6/1.8/2.0/2.2/2.4/3.0mm), 10Pcs. Hard Steel: With sufficient bending strength and wear resistance, which ensures high working efficiency. Material: Using ultra-fine grain carbide, with good milling and cutting performance. Advantage: Sharp cutting edge, milling, hole and plate edge, clean, neat surface, no glitches. Application: Processing PCB, SMT, CNC, Mold, plastic fiber, carbon fiber, hardwood, circuit board and other precision parts. Note: The data are all manually measured, please allow 1-3cm error, due to the difference in light and display, there will be a certain color difference, the actual item received shall prevail.