Description:

0.255 inches single end drive surface size, square single end internal drive end shape, steel material, cadmium surface treated.

Properties:

A wrench component which may contain notches within an open end, box, open wall box, 2 or 3 lug open end wrench opening having a square, internal, fixed, eccentric drive parallel to the wrench opening, designed to receive the external drive end of a handle, socket wrench. Items having an open end type wrench opening may have a second drive opening at right angles to the wrench opening. See also socket, crowfoot wrench head and head, crowfoot socket wrench.