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Features:● Service life is long,10 times higher than the durability of high speed steel cutter,200 times more than the small wheel durability.● For the most work it can be replaced with small grinding wheel, and no dust pollution.● Carbide rotary file generally use with handheld electric or pneumatic tool drive (can also be used in machine tool).● For finishing all kinds of metal mold, all kinds of metal and nonmetal carving, parts processing etc, easy to use, safe and reliable, can reduce labor intensity.● Carbide rotary file, Widely used in machinery, automobile, shipbuilding, craft sculpture ect.Product Size:SD-1:1/2" Ball shapeSD-3:3/8" Ball shapeSA-5:1/2" x 1" Cylindrical shapeSA-3:3/8" x 3/4" Cylindrical shapeSF-5: 1/2" x 1" Tree shaped radius endSF-3: 3/8" x 3/4" Tree shaped radius endSC-1:1/4" x 5/8" Cylindrical radius endSF-3:3/8" x 3/4" Tree shaped radius endSpecifications:Material: tungsten carbideGroove: Double Cut SolidShank diameter: 1/4" (6mm)Quantity: 8pcs/setUses:● Cleaning trimming, veining and weld joint of casting, forging and weldment, molds Inner hole surface of machinery parts finishing.● The process of various metal and nonmetal sculpture, of A variety of mechanical parts chamfer, round and groove processing.● Can process a variety of high-precision mold cavity, long service life, applies in the cast iron, cast steel, carbon steel, alloy steel, stainless steel, copper, aluminum, metals ect.Warm Tips:⚠ Ensure your burr shank is well inserted into your collet and clamped down tightly.⚠ Please wear an eye mask to protect your eyes from filings.