Rotary 5pcs/set burr Drill Bits Set

petiole wheel was from the past use our Rotary Drill With no dust pollution 💪process out a various of high-precision mold cavity  Long life, the durability is 10 times higher than high-speed steel cutting tool, 200 times higher than small grinding wheel High production efficiency, the processing efficiency is several times higher than file, nearly 10 times higher than small wheel stalk Suitable for low hardness of the workpiece, such as soft wood and plastic Features  100% Brand New and High Quality Black surface treatment Suitable for wood, plastic and other soft materials, carving, engraving, chamfering, engraving, slotting, reaming and other effects. Specifications Material: 45 steel Handle diameter: 6mm Black surface treatment Head length:10mm/21mm/25mm/25mm/29mm All measurements are approximate and may vary slightly from the listed dimensions. Package included: 1X 5pcs Grinding Heads