General description This Woodworking Rotary File set includes 5 different shapes: ball, oval, cylinder, large cone, and small cone. It is designed for use with electric and cordless drills, making it a versatile tool for various woodworking tasks. Technical specifications Material: 45 steel Shank size: 1/4" (6 mm) Shapes included: ball, oval, cylinder, large cone, small cone Size measurement error: 1-3 cm Usage Suitable for wood, plastic, and other soft materials Applications: carving, engraving, chamfering, etching, grooving, boring, and more Other information Black fire-hardened surface treatment for enhanced sharpness and durability Convenient control and simple use, ensuring a safe and reliable operation Minimizes dust pollution, improving the working environment Color may vary slightly due to different monitor pixels