| Big fan of panasonic cordless tools.. this is my 3rd. I was having a problem countersinking big screws into hardwood or cement board so based on some advice picked up this tool.. It took over where my very powerful 15.6 left off.. taking 3" screws that were stripped and wouldn't go in and countersinking them no problemo... the impact nature makes it less likely to break screws like the 15.6 does occasionally... I actually put a 3" screw about 1" countersunk into a FIR stud just testing out the capabilities. Quite literally it will keep driving most screws 'til you let go of the trigger, so better use a dimple bit on softer material. caveat: i had a few minutes of buyers remorse when i first used it as it is QUITE loud.. make no mistake when this is working your house is 'under construction'.. however you do get quite used to it, it's definiately worse as a bystander. I would rate it 4 1/2 stars for the one major problem: non standard chuck... argh on panasonic.. why why why? the solution to fix it is to put a slug of 1/4 hex cut off an old bit shank into the chuck or perhaps a couple #4 hex nuts (if that's what is 1/4"). .makes for easier removal if necessary... anyhow they did it so the double-headed bit that comes with fits nicer but makes NORMAL quick bits jam... and i have yet to find any bits whatsover including from panasonic that match the groove for the double headed quick bit that comes with. The charger that comes with is awesome because it works up to 18V batts... i can bring one charger and all my tools someplace and can charge my drill, my impact or my saw no need for 3 chargers. Until the torque load gets high enough it operates just like a drill, so small bits and small screws work great just like your drill and pretty much silent. I'm thrilled with the driver it's possibly my favorite tool.. too bad it needs a hack to fix it, but with the fix it's flawless. | 
"great first generation"
"Powerful little monster"