The circular drill bit allows large diameter holes to be made in various soft materials. It is suitable for wood, drywall, plastic and plywood. The drill got its name because of the principle of operation, where after the main, central drill, which is like a ballerina rotating on one leg, side cutters work. It is thanks to these cutters that the holes are so wide.  A special feature of this drill is the possibility of manual adjustment. You can set the values for making holes from 4 to 20 cm. There is also an option with a range of 4 to 30 cm. The side blades can be removed and sharpened if necessary.