Chain tool

A chain tool comprising:

• a body including a receiving portion, a driving hole, and a stop portion, wherein the receiving portion is located between the driving hole and the stop portion in an axial direction of the driving hole, and wherein the driving hole includes an end intercommunicating with the receiving portion and a first threaded portion therein;
• and
• a push unit including a pressing member and a push member, wherein the pressing member is received in the receiving portion and is movable relative to the body in the axial direction, wherein the push member includes a second threaded portion in threading connection with the first threaded portion, wherein the push member is movable between a first position and a second position relative to the body in the axial direction, wherein the push member presses against the pressing member to push the pressing member to move together with the push member, wherein the pressing member moves in an arcuate path when the push member moves between the first and second positions, wherein the pressing member is in a position distant to the stop portion when the push member is in the first position, and wherein the pressing member is in a position adjacent to the stop portion when the push member is in the second position.