This nozzle allows the chamfering of bolts to be restored. It removes burrs on the edge of the bolt or stud. This not only adds to the aesthetics of the threaded fastener, but also prevents sharp metal edges from getting under the skin. This is especially true if the edge of the bolt was cut off with a bolt cutter or the thread was cut manually. The principle of action of this device is extremely similar to the work of a file, but it is performed much faster and more efficiently. The length of the nozzle is 48 mm and the diameter of the inlet hole is 22 mm.