I cannot say exactly how they work but it is not like a hammer drill. I can do anything from drive a drywall screw, install devices, and then go directly to driving 4" lag bolts with mine. One of the best tools to hit the shelf in a long time. The prices have been dropping on them here lately too. The one we use is only 14.4 volts too. The bigger ones must be awesome.How's an impact screwdriver work? Is it different than chucking up a screwdriver bit in a cordless hammer drill set on "hammer"? I guess I'm behind the curve, because I didn't know such a thing existed.
Thanks for that review!I picked up the Bosch PS40. Charged up the packs and put it to work.
I am impressed, it is not as powerful as a full size impact driver but has more umph than the PS20. Speed in setting screws is not incredibly fast but it gets the gob done even when stacked up against a 3" deck screw into 2 x 4 stud. Bosch did a nice job with the light ring around the hex chuck, illuminates better than most cyclop LEDs on other cordless drivers. Batteries charge fast, approx half hour. Not the tool for finishing a
deck or putting down a subfloor but sure would handle the various tasks that we would throw at it.
SOLD! I'm buying one, in that case.MDShunk
Something I forgot to mention about the Bosch PS40 and all other impact drivers I've tried is that there is no horrible wrenching on your wrist, like what you get with a regular drill driver when you get near the end of putting in a fastener. Since having started using impact drivers, my wrist have been very happy.