Because I made the mistake and bought from the series rechargeable drill, angle grinder, impact wrench, and jigsaw. Be careful, you will throw your money away; the most miserable and weakest tools I have ever bought in my life. The drill damaged the chuck and trigger from the first day, the angle grinder didn't even get to use a disc and caught fire after 1 month of waiting for repairs, it worked for 1 year of light use and the bearing seized out of warranty and the repair is not worth it. The impact wrench burned out the trigger twice while under warranty and once out of warranty. I have no benefit, I'm just commenting to prevent the bad, stay away from Bulle even for light amateur use; the Parkside Performance series from Lidl is far superior and cheaper