Chain tool for different speed chains

A chain tool for chains of different speeds comprising:

• a main body having a first body portion and a second body portion and including a working zone delimited by the first and the second body portions for receiving a chain;
• a driving mechanism supported by the first body portion and movable toward and away from the second body portion, wherein the driving mechanism includes a first driving member adapted to retain one of a pair of plates of the chain and a second driving member adapted to drive a pin through the pair of plates of the chain, and wherein the second driving member is movably coupled to the first driving member;
• and
• a stopper adapted to stop the pin selectively connected with the second body portion between a first and a second connection way, wherein the second body portion has a slot for connecting the stopper, wherein in the first connection way the stopper includes a first end inserted in the slot, and wherein in the second connection way the stopper includes a second end inserted in the slot.