Note: The color of the product we ship is the color in the first picture, and the specification and quantity are shipped according to the quantity and specification described in the title. If you need to change the color or style, you need to contact us within 12 hours after placing the order. Our product description: These 10Pcs carbide engraving bits are great replacements for your CNC or PCB machineryWith sufficient flexural strength and wear resistanceMilling, hole and plate edge, surface clean, tidy, no burrMade from ultra-fine grain carbide Product material which of good milling properties to ensure efficient workA Wide Range of Product materials can be engraved, including: Circuit boards,Metal,Majority of Plastics, Wood,Fibre glass, Carbon,FR-4, CEM-3 board and environmental boardSpecification:Product material: solid carbide(Tungsten steel)Shank diameter: 3.175mm or 0.125 inchCutting edge diameter: 0.6mm,0.7mm,0.8mm,0.9mm,1.0mm,1.1mm,1.2mm 1.3mm,1.4mm,1.5mmTotal length: approx. 1.437-1.5 inchWeight: 48gPackage include:10Pcs Carbide End Mill Engraving Bits Note: Because the model and display effect of the monitor may be different, there may be slight differences in color, and the size is manually measured, there may be an error of 1-2cm, please understand.