Set of display board and socket

A set of display board and socket including:

• at least one socket, the socket including a connecting end and a working end, the connecting end being adapted for assembling with a driving tool and including a positioning hole, the positioning hole including a large-diameter hole, a small-diameter hole and an inner hole which are continuous from outside to inside, the working end having a working hole, the inner hole connecting the small-diameter hole and the working hole therbetween, an inner diameter of the inner hole being smaller than each of inner diameters of the small-diameter hole and the working hole;
• a display board comprising
• a main body, the main body being formed with a hanging portion at one end, at least one side of the main body formed with an assembling portion, the assembling portion including at least one stepped engagement portion protrudedly formed on a surface of the main body, the stepped engagement portion being adapted for inserting in the positioning hole, the stepped engagement portion including a small-diameter portion protrudedly formed on the surface of the main body and an inner hole engagement portion coaxially and protrudedly formed on the small-diameter portion, the small-diameter portion including a first lateral surface on an outer circumferential surface thereof, the inner hole engagement portion including a second lateral surface on an outer circumferential surface thereof, an outer diameter of the inner hole engagement portion being substantially equal to the inner diameter of the inner hole;
• wherein when the stepped engagement portion is inserted in the positioning hole, the first lateral surface at least partially corresponds to and is releasingly assembled within the small-diameter hole, and the second lateral surface abuts against and is tightly engaged with an inner wall of the inner hole so that the socket is positioned to the main body.