ITEM NAME:6pcs Carbide Cutter Rasp Rotary Burr Drill Bit Wood Carving Engraving Polishing Product Description: Model: Hard high speed steel rotary burr Material: high carbon steel Packing: plastic packaging Applicable materials: suitable for plastic, porcelain, soft metal, stone, and other materials peeled polished. Applicable scene: grinding tool manufacturing, mechanical chamfering / rounding / drawing operation, cleaning casting / forging / welding of male flying hair, burr and welding gap, metal crafts art carving. Package Include: According to your Choose!.Model: Hard high speed steel rotary burr. Material: high carbon steel.