Tool storage device

A tool storage device comprising:

• a container comprising a jar defining a first receiving portion therein, a first opening intercommunicating the first receiving portion with an outside, and a first closure cap configured to be in threading connection with an end of the jar and to close the first opening, wherein the first closure cap comprises a first coupling portion and a first closure portion, wherein the first closure cap is coupled with the jar by the first coupling portion and closes the first opening by the first closure portion, wherein the first closure cap comprises a second receiving portion on a side thereof opposite to the jar and a second opening facing away from the jar and intercommunicating the second receiving portion with the outside, wherein the container further comprises a second closure cap, and wherein the second closure cap is configured to be in threading connection with an end of the first closure cap opposite to the jar and closes the second opening;
• and
• a tool rack comprising a base on an end thereof and a tool hanger rack on another end thereof, wherein the base is disengageably mounted to the first opening, wherein the tool hanger rack is received in the first receiving portion, and wherein when the base is disengaged from the first opening, the tool hanger rack is removable out of the first receiving portion.