Abstract: The invention concerns a combined tool for countersinking or inserting pins is essentially shaped like a pliers, comprising a handle and a lever articulated about a pin, the ends of the handles, respectively of the lever, opposite to the ends forming hand grips, bearing a body for receiving the object portion provided with the pin to be countersunk or inserted and an end portion adapted to actuate a pin-punch or a pin-pusher located in a housing of said body. The combined tool is particularly designed to countersink or insert a pin connecting two successive links of a bracelet.