In the Naruto Royal Kingdom Bearing Series are some of the most advanced hair cutting scissors in the world. In this series there are two types of bearing packings for this series depending on the size of the scissors. One has a diameter of 13mm to the packing and contains 10 ball bearings. The other has a diameter of 16mm to the packing and it contains 14 ball bearings. The diameter of the ball bearings for both packings are in the units of millimeter and made out of a metallic material that does not erode away. It also includes the shaft bearings to the bolt to give a smooth and a light movement to the blades when cutting.