Features MULTIPLE USAGES: This grinding head can be used for carving, chamfering, hollowing, slotting, and expanding holes, suitable for wood or plastic. SPECIFICATIONS: Including 2 grinding heads, M14 and M10 specifications, suitable for installation and use on angle grinder, stable and reliable. HIGH CARBON STEEL: These burr files are made of high carbon steel, with high hardness and heat resistance, quenching increases wear resistance. FINE PROCESSING: With fine polishing process, the grinding head has a incisive edge, making chip removal smoother, ensure efficient operation. STANDARD SIZE: These grinding heads have standard size, easy to install and disassemble, and are suitable for processing woodworking projects. Specification: Item Type: Rotary Burr File Material: High Carbon Steel Use: Suitable for carving, engraving, chamfering, hollowing, slotting, and expanding soft materials such as wood products and plastics Package List:2 x Burr Files Package List 2 x Burr Files