Thank you all for the input and comments.
I originally bought a kit that had one 18V cordless impact wrench (w +/- 100ft-lbs) that weighted almost 3lbs and one drill/screw driver
But ended buying only an impact wrench that has 155 ft-lbs that weights 3.4lbs, it seems that I was not considering the benefit of a compact and light weight tool..
Again, thank you all and FelĂz Navidad