A socket wrench includes a head unit with two lug members, a tubular shaft, a handle rod, a first spring-loaded member disposed to permit the tubular shaft to be rotatably engaged with the head unit, and a second spring-loaded member disposed to permit the handle rod to be slidably engaged with the tubular shaft. The handle rod has front and rear end segments each having a cavity configured such that when the handle rod is displaced to a forward or rearward position, the second spring-loaded member is engaged therein, and such that when the handle rod is moved away from the forward or rearward position, the second spring-loaded member can slide out of the cavity.