High Quality: Wood drill bits made of premium high speed steel for high hardness, high abrasion resistance and high heat resistance. 1/4" shank size is suitable for most electric and cordless drills Main Function: Rotary woodworking drill bits are available for handling wood, non-metals ferrous, plastic and rubber, soft materials, etc Usage: rotary drill bits are available for handling wood, non-ferrous metals, plastic and rubber, soft materials, etc Content: 5 shapes: ball, oval, cylinder, large cone, small cone. 6mm shank suitable for most electric and cordless drills Convenient control: simple rotary file, safe and reliable, no dust pollution, improve the working environment Features: Material: Steel. Color: Grey Handle diameter: Approx. 0.63mm. Length: As pictured. Quantity : 5 pieces. Scope of application: Used for grinding, polishing, surface removal and corrosion. Contents: Pack of 5 rotary cutters. Friendly reminder: 1. Due to the different manual measurement methods, please allow a slight difference in size. 2. Due to the light and screen setting difference, the item's color may be slightly different from the pictures, but does not affect the normal use.