Abstract: An electromotive screwdriver comprising a head assembly, a barrel, and a fixing assembly. The head assembly comprises a first inclined plane which is integrally formed with the housing of the head assembly and which is provided with a hollow ball, a channel and a ridge-like runner. The barrel comprises a second inclined plane which is integrally formed with the housing of the barrel and which is provided with a spherical recess, a serrated channel, and a box-shaped runner. The two planes can be engaged by adapting the ball into the spherical recess as well as inserting each runner into corresponding channel. The fixing assembly is disposed on the barrel which has a spring member that will urge the lug body into the first or second rectangular recesses provided on the first inclined plane of the head assembly through a rectangular opening on the second inclined plane.