Wrench socket, has overlay cladding applied on upper surface of tubular body, and tubular opening and plug-in opening formed on both ends of body, where color of overlay cladding clearly stays in contrast to coloring layer

摘要

The socket has a labeling unit (20) formed on an upper surface (15) of a tubular body (10), and a characterized slot formed on an upper surface of the tubular body in a predetermined position. A coloring layer with predetermined color is applied in the slot, where an overlay cladding is applied on upper surface of the tubular body that is not adhered to an upper surface of the coloring layer. The color of the overlay cladding clearly stays in contrast to the coloring layer, and a tubular opening (11) and plug-in opening (12) are formed on both ends of the body.