Patent ID: 7000505

Claim:
A socket, comprising a main body including a first cylinder, and a second cylinder integrally formed on the first cylinder, wherein: the first cylinder of the main body has an outer periphery formed with a plurality of outer teeth; the second cylinder of the main body has an inner periphery formed with a plurality of inner teeth; the inner teeth of the second cylinder of the main body and the outer teeth of the first cylinder of the main body have the same tooth number and have the corresponding tooth shape; each of the outer teeth of the first cylinder of the main body has an arcuate shape; each of the inner teeth of the second cylinder of the main body has an arcuate shape; the first cylinder of the main body is formed with twelve outer teeth; the outer teeth of the first cylinder of the main body are arranged in an annular manner; the outer periphery of the first cylinder of the main body is formed with a plurality of arcuate recesses located between the outer teeth; the first cylinder of the main body is formed with twelve recesses; the second cylinder of the main body is formed with twelve inner teeth; the inner teeth of the second cylinder of the main body are arranged in an annular manner; the inner periphery of the second cylinder of the main body is formed with a plurality of arcuate recesses located between the inner teeth; the second cylinder of the main body is formed with twelve recesses; the inner teeth of the second cylinder of the main body and the outer teeth of the first cylinder of the main body have the same tooth size so that when any two sockets are connected with each other, the outer teeth of the first cylinder of a first socket are correspondingly inserted into and engaged with the inner teeth of the second cylinder of a second socket; the inner teeth of the second cylinder of the main body are in line with the outer teeth of the first cylinder of the main body; the socket further comprising a ratchet wrench including a drive head having an inner periphery formed with a plurality of arcuate inner teeth; the drive head of the ratchet wrench is formed with twelve inner teeth; the inner periphery of the drive head of the ratchet wrench is formed with a plurality of arcuate recesses located between the inner teeth.