Display board for socket

A display board, for assembling of at least one socket thereto, the socket including a connecting end and a working end, the connecting end 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 display board comprising:

• a main body, 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 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;
• 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 corresponds to and is tightly engaged with an inner wall of the inner hole.