To bring leaves to a stop at an arbitrary rotary angle by forming the inner diameter of both plastic leaves a little smaller than the diameter of a metallic pivot and making the inner diameters of the tubes of both leaves different from each other.

When both leaves 6, 8 are opened or closed, the leaf 8 having tubes 10, 10 with a smaller inner diameter rotates together with a pivot 14. The other leaf 6 having a tube 12 of the pivot with a larger inner diameter can not rotates together with the pivot 14 and the tube 12 of the leaf 6 rotates along the peripheral face of the pivot 14. As a result, the inner peripheral face of the tube 12 of the leaf 6 and the peripheral face of the pivot 14 serve as frictional faces to bring the leaf 6 or 8 to a stop at an arbitrary opening angle. The hinge 2 is attached to the connection parts of the cover and the body of a small wooden product with wooden screws. Hence, attachments such as a liquid crystal display or a lid in a small electronic instrument or a wooden product can be brought to a stop at an arbitrary opening angle.