Practical engraving drill bits: the package comes with 5 pieces wood carving and engraving drill accessories, and 10 pieces HSS carbide rotary burr bits, enough to use, and help you to make kinds of crafts without breaking the wood, to bring you smooth finished effect material: made of high speed steel material, and sturdy to use, not easy to break, offer nice cutting power to use; 15 Different shapes of bits are intended for faster wood removal, you can easily work with woods more faster while leaving a smoother finish; Fit for grinding, polishing, shaping and burnishing , plastics and rubber surfaces Different sizes to choose: our carving drill bit measures . 3 x 3 mm, 3 x 4 mm, 3 x 5 mm, 3 x 6 mm, 3 x 8 mm in shank and bit diameter, the router measures about 1.5 inch/ 39 mm long, and the handle diameter is about 3 mm; Please allow a little error on the size due to manual measurement Convenient to use: all shank size is 3 mm, allowing them to be compatible with most grinders and rotary tools, to finish, grind and shape your work effectively; Just install it like any other typical drill bit and easy to use Suitable occasions: this useful set can be applied for carving and engraving drill bit, also perfect for beginners, DIY lovers and skilled people, to complete handmade carving making projects; You can also share them with your friends or family members Colour: silver Material: steel Package Contents: 5 x Wood carving and engraving drill accessories 10 x Carbide rotary burr bits Only the above package content, other products are not included. Note: Light 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.