General description These 100 pieces of 3MM pole blue polishing grinding head abrasive mounted stone drill bits are designed for engraving, cutting, and buffing. They are precision ground for quick and easy sharpening of chain saw blades, offering high working efficiency and a perfect grinding effect with a long lifespan. The grinding force is 5 to 10 times higher than that of general grinding tools, making them ideal for precision polishing and burring tasks. Technical specifications Diameter: 3MM Color: Blue + Silver Material: Blue Corundum Package Contents: 100 x Polishing Heads (with storage box) Measurement allowed error: +/- 1-3cm Usage These grinding heads are convenient to use, safe, and reliable, effectively replacing small grinding wheels without causing dust pollution. Other information Note: Light and different displays may cause the color of the item in the picture to differ slightly from the actual product.