DescriptionThe rotary file kit for using with most small rotating tools, and helping you get things done more easily and quickly, to meet most of your drilling needs. Different shapes of rotary bits are suitable for woodworking, engraving, drilling, beveling, grooving, reaming, shaping, hollowing, widely applied in different kinds of materials such as wood, plastic or resin models.Features-Color: Silver.-Material: Tungsten Steel.-Size: About 4.50X0.60X0.50cm/ 1.77X0.24X0.20inch.- for Electric grinder, crane grinder, electric drill, wind mill, etc. - Which can satisfy your various working needs, enough to apply and change.- The grinding heads are made of tungstensteel, sturdy to use for a long time.- Excellent for fine detail work, cutting, engraving, carving, touch-up, finishing and cleaning trimming.- Help you to improve the whole work efficiency, bring you more convenience.