. A structure for connecting a tool with a grip, comprising:
an insertion rod, a top section of the insertion rod being formed with a socket for inserting a tool therein, a top section of the insertion rod being formed with a flange, one side of the flange having a downward extending projecting block, a middle portion of the projecting block being formed with a transverse recess, a lower projecting block being formed on lower side of the transverse recess;
an outer sheath, an interior of the outer sheath including a receptacle for inserting the grip therein, one side of the outer sheath being formed with a downward extending split in which the projecting block of the insertion rod is inserted, a periphery of the outer sheath being formed with an annular groove passing through the split, the annular groove being such positioned as to cooperate with the transverse recess of the projecting block inserted in the split; and
a fastening ring fitted on the outer sheath, an inner circumference of the fastening ring being formed with an annular rib corresponding to the annular groove and having a shape complementary to the shape of the annular groove, the rib being formed with a dent having a width slightly larger than the width of the split for the lower projecting block of the insertion rod to pass through the dent.