10 Mini Router Bits for Carpentry. This is a new set of 10 mini router bits. Great for carpentry. These bits are made of high speed steel and are titanium coated. They can be used with a Dremel tool. Each has a 1/8″ (3 mm) shank. We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.