Tool

A tool comprising:

• a socket formed by a single piece of homogenous material, with the socket defining an axial non-circular space of constant cross-sections extending in the socket, with the socket further defining a radial space of constant cross-sections extending in the socket and in communication with the axial non-circular space;
• a controller comprising a passage defined therein and a locking ridge formed on a wall of the passage, wherein the controller is movable in the radial space of the socket between a locking position and a releasing position;
• an elastic element pushing the controller to the locking position;
• a handle connected to the socket;
• and
• a bit comprising a working tip and a shank of constant cross-sections of a size for slideable insertion in the axial non-circular space and the passage, with the shank defining at least one locking recess for receiving the locking ridge when the shank is inserted into the passage of the controller through the axial non-circular space of the socket, thus locking the bit to the socket.