Features: 100% brand new and high quality. It is hex handle high-speed steel rotary files set. Applicable for fine carving of resin, plastic, porcelain, soft metal, stone, etc. Suitable for white skin removing, polishing for wood and jade, etc. It can replace small emery wheels, high efficiency, the processing efficiency is higher several times than hand tools. High processing quality, file smoothly, can process out various shapes of mold cavity. Long life, easy and simple to use, safe and reliable. Notes: It is strictly prohibited that supported used with those fixtures which heart is different. The shank must be clamped tightly and correctly while using, shaking phenomenon is strictly prohibited during the operation. The cutting direction should move smoothly from right to left, do not need too much force,prevent the impeachment and impact. To prevent the eyes from injured by the flying debris, please wear the protective glasses while using. Specifications: Material: High-speed steel Crafts: grinding Shank Diameter: 6.35mm Head diameter: 13mm Full length: 65mm Shank length: 40mm File length: 25mm Quantity: 5pcs Package Included: 5pcs High-Speed Steel Rotary File Grinder Set