Ball File - The size of the file is about 25 x 25 x 23 x 109mm (head diameter x handle outer diameter x file mouth length x total length).DURABLE - Made of Carbon steel, it has a long service life and is suitable for processing metal materials.MULTIFUNCTIONAL - Widely used in metalworking, toolmaking, engineering, model engineering, wood carving, jewelry making, welding, chamfering, casting, deburring, sanding, cylinder head porting and engraving.Functional - Very rough coatings can remove blanks quickly while maintaining a relatively finish. NOTE: Grinding head only, grinder not included, just for showing in pictures.Great Gifts- DIY carved fan as a gift.Material: carbon steelColor: BlackPackage Contents:2 x Grinding HeadOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.