I am a retired mechanic. Now 72 yrs old I still do work for myself, neighbours and teach all who wish to learn how to look after their vehicle. I have used many impact wrenches over the years, yet was really surprised by this dual hammer 1/2" drive unit. With all sockets, a short extension and even an oiler, I am amazed at its price, along with its power. Years ago dual hammer impacts were approx $700. They then came down to around $500, then $250 and now $88.99. I use proper tool oil in all my air tools and all my tools, air or otherwise are kept in original standards of working condition - outsides may be scuffed after 20 - 30 yrs use but inside they are as good as new. This dual hammer unit has all the guts that I need. On 2nd tightening setting it has all the wheel nut tightening torque needed with two "ugga duggas". Any more than that takes torque past 130NM. In loosening mode, it has all the guts I need to loosen even really tight bolts/nuts. I slight tickle of the trigger is standard practice with any impact wrench in loosening mode to ensure that nothing stupid happens like snapped bolts. With this unit it is even more important. Going "bull at a gate" is not real smart with this unit. I have recommended this unit to others. Many have used it themselves here at home in my 16M x 8M shed. I have bought other Vevor brand items and have been happy with all of them as well.