The lower portion of the insert member has a side surface with two chamber units and abuts against the bottom flange for preventing downward removal of the insert member from the head portion of the spanner body. The ratchet wheel is disposed rotatably inside the head portion of the spanner body. The ratchet wheel has a diameter-reduced bottom end that extends into the bottom opening in the head portion of the spanner body and that outlines a circular shoulder, a toothed portion with a plurality of ratchet teeth, and a top end portion that’s formed with an annular groove. The circular shou
The top flange outlines a top opening therein, and has an arched and slotted inner peripheral surface with an open-ended slot that extends circumferentially therealong. The bottom flange has a circular inner marginal surface, which is created with an inward flange that extends integrally, radially and inwardly from a bottom end of the circular inner marginal surface and that defines a bottom opening therein. The insert member is inserted into the head portion of the spanner body between the top and bottom flanges. The insert member has a lower portion with a top surface, a upper portion th
The lower portion of the insert member has a side surface with two chamber units and abuts against the bottom flange for forestalling downward removal of the insert member from the head portion of the spanner body. The ratchet wheel is disposed rotatably inside the head portion of the spanner body. The ratchet wheel has a diameter-reduced bottom end that extends into the bottom opening in the head portion of the spanner body and that defines a circular shoulder, a toothed portion with a plurality of ratchet teeth, and a top end portion that’s formed with an annular groove. The circular
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