Abstract: A socket has a dark colored outer surface and a specification rolled in the outer surface of the socket and coated with a brighter colored electroplating. The method for the surface treatment of the socket includes rolling the specification in an outer surface of the socket; electroplating the socket with a light colored layer of electroplating; removing the light colored layer of electroplating from the outer surface of the socket except for the specification and coating a dark colored layer on the outer surface of the large section except for the specification. By the surface treatment, the specification is obvious from the dark colored outer surface of the socket.

Abstract: A socket has a dark colored outer surface and a specification is rolled in the outer surface of the socket and coated with a brighter colored electroplating. The method for the surface treatment of the socket includes step of rolling an specification in an outer surface of the socket; step of electroplating the socket with a light colored layer of electroplating; step of removing the light colored layer of electroplating from the outer surface of the socket, and step of coating a dark colored layer on the outer surface of the large section and the specification is not included. By the surface treatment, the specification is obvious from the dart colored outer surface of the socket.