WALFRONT Electric Screwdriver Adjustable 1/4" Handheld Straight Shank Practical Repair Kit 900RPM Fit Screw 2-6mm(US Plug 110V)

We used it to put in many screws.

Easy to work with, the clutch isn't clear with faulty controls. I ordered another one and both had the same clutch issues

The drill itself says 850 RPM, but when you use it you can count the rate of rotation. This one is about 240 RPM, and the only reason I bought it was the high advertised RPM.

It's tough. I egregiously misused it for about 100 hours and it's still going strong. No complaints here.

UPDATE : If you want to get to the bottom line you may want to skip, now, to "The Bottom Line". Since mine has been the only review so far over in the other amazon page for this product I figured I would add mine to the several reviews here. I was looking hard for a corded medium duty (medium powered) screw driver and this was about all I could find. For what it is worth I own a very high quality older, corded, Dewalt drywall screw gun and a very high quality older, cordless, Dewalt general purpose drill / driver. Both super great tools ! Oh and I've got the mandatory Dewalt hammer drill as well. For my current application bulky pistol grip tools are less than desirable. A screw driver size tool that merely spins the fastener with out much bulk or fuss is the ticket. This tool does just that and spins a significant amount faster than the Skill battery tool that I have been using in the past. Side note I always ask : Why does my twenty year old Dewalt tool batteries fully charge in 45 minutes but my bike lights, some I bought just this year, take four hours to fully charge up ? Come on kids ! Anyway . . . I'm not a chimp but I am gazing at this corded, powered, screw driver and liking what I see. The brand name as advertised here on Amazon on the one of these I bought is "Gazechimp". The actual brand on the tool I received is : Kopo The blank little square indented area in the photo above is where the Kopo label on mine is. Funny Walfront (the suposed manufacture of this one acording to the product literater on this page) didn't stick their label there . . . if they have any labels. The follow below is from my review of the Gazechimp Kopo My Chinese brothers : This questionable translation / brand name (Gazechimp) was enough to cause me to put off buying this product for months while I searched for another alternative screw driver that was corded. Had the brand name simply been listed here on Amazon as Kopo I wouldn't have hesitated and most likely would have ordered it far earlier. In the end I was gifted some Christmas "Mad Money" and just blew some on this Gazechimp in the hope that it was a quality tool despite it's preposterous brand name. So far I am glad I ordered it. By the way it took weeks to arrive but came faster than estimated by a full week. Disclaimer : I have only ran it with no load in my living room. I will take it to work where it will be used daily and I will update this review when I get some serious professional mechanic use on it. PS: I'm currently using a very light duty Skill cordless driver and it is quite under powered for my purpose. My purpose is unscrewing small diameter but rather long hex head and torx head screws that have pre placed blue plastic material in the threads. I won't call it Loctite because it is far from that tenacious. Then putting together assemblies using the powered driver to spin the fasteners back down before using another tool to torque them properly. Still, when the screws are initially backed out after they are loosened there can be enough resistance to challenge the Skill driver at times. For screws that have no blue stuff on the threads the Skill diver is great. Since I don't spend any time to speak of on ladders or in challenging construction spaces I have never been a big fan of cordless power tools. For my uses batteries just add bulk and unnecessary expense. I'm a pro mechanic as I said before so I prefer the added torque and speed of corded power tools and the convenience of not having to charge batteries. ?Air driver? Yeah I hear yah. I'm not a fan of all the noise. As I said; will update this review when I can. UPDATE / first day on the job : There is a clutch in the head of the tool that one can set by rotating the black collar just behind where the bit goes into the chuck. It is not all that clear how / which direction to turn the collar. There is an arrow and some graduations but no numbers. While using the tool I turned it a lot both ways and did not get much response. I finally clamped the tool bit in a vise and experimented. I was able to then tell when I had the collar set so the clutch would slip and let the motor turn and the bit stop. Handy to use with very light / small fasteners to prevent over tightening or breaking the screw. For most fasteners one would just set it so the tool tightens as much as it can and then go back and finish the job with a regular hand tool. Meaning I wouldn't call this a powerful tool to the point it is going to over tighten or break any but the very smallest fasteners. The Kobo tool slips in your grip before that happens. Don't expect to spin the fastener down until the motor stops turning and then tighten it by just turning the tool like a screw driver. At this point the tool just turns around the motor armature. Unlike the Skill which gives the illusion that one can finish tightening the fastener and indeed the Skill has a rubber grip so the tool doesn't slip in your hand. Only problem is the Skill then gets jammed inside as if the little gears are getting over taxed and when next I try to run the motor it gets stuck until I rotate the tool by hand in the opposite direction to un stick it. So far this is just the tool I was hoping it to be. If I had to nit pick I would wish for a longer cord but it is no problem to add an extension cord into the mix. I wouldn't call the cord on it by no means short ; it is right at two meters long. I'm pretty happy at this point. I only spun out eight long fasteners and then spun them back in after assembling the structure. I used a 4mm allen wrench to do the final torquing. HINT / HACK : as with my Skill driver I am using long tool bits ( more than 100mm) and I slip a 1/4 inch ratcheting box end wrench over the 1/4 inch tool bit. Gear Wrench is one brand that makes these ratcheting box end wrenches. This makes it easy to break the fastener loose enough for the powered driver to turn it and or use the wrench to do the final tightening of the fastener when installing it. Some of these wrenches have a flip lever to reverse the direction and those that do not it is fairly quick to slip the wrench off the bit, flip it over and slip it back on the bit. UPDATE 1-6-22 : My chimp died in my arms ( well in my hand anyway ). So sad. Lets back up to the day I used it before today; I had spun some fasteners in and put him on the work bench. Then it started to turn on it's own (was at full stop when I set it down). I thought maybe I had laid it down on the power lever / button. But I don't think so. I picked it up and it was still going. It stopped soon after that so not sure what happened there. Then today I was unscrewing some very small fasteners ( 2mm x 56 TPI). They were already loosened with a wrench and I was just spinning them out. I had done five or six (I had about thirty more to do) and on the last one I heard a tiny fwapop sound and that was it. Did you ever play with a kids cap toy gun and get a dud ? it kind of just does this little almost imperceptible fwapop. Like it's wet and burns a tiny bit instead of going bang. Yeah . . . that's what I heard. Futz with it as I may I could get no more action out of it. No humming or any thing at all. Sure I'm going to pull it apart tonight. Probably void the warranty in the process. It is just that this thing is about perfect for me if I could just keep it working. Just last night I was looking at 1/4" electric ratchets (darn battery power again) and the things are slow as heck 250 rpm ! I may have seen one that does 400 rpm. This little Gazechimp Kopo does 900 rpms ! BIG DIFFERENCE when I'm trying to get some work done. Keep your fingers crossed for the Kopo. Maybe like Dr Fankensteeen I can some how reanimate dead tissue. Kopo : make this thing more robust, charge twice as much and lets get on with it ! ***************The Bottom Line***************** : Ok . . . sorry anyone following this saga for the delay. (this is a great tool for certain uses and worth all the effort) Finally got around to disassembling the case. Clue : there are two press fit metal pins ( 29mm long by 2.5mm OD ) that transfix the blue case to the black gear case. You won't get him apart without pressing these out. First press these out with a drill press with a metal rod of appropriate size in the chuck. (no need to turn drill press on ) Then remove the screws holding the case halves together. All metal gears ! Yeah ! Remove the two screws on the end of the blue case after removing the black gear case unit. (no need to do anything with the C-clip). Inside I found a four pin electronic chip with the designation : GBL 1010 AC Also S_P RU but the “R” is backward and there is a cryptic symbol between the S and the P. This may be part of the power supply or just a signaling device that tells the machine to blow up on the twelfth period of operation. : ) : { Clear as day one of the four post contacts coming out of this chip vaporized. The bare end of the ground wire had also vaporized clean off. Presumably it was soldered to the board at the fourth chip post. Just a scorch mark on the board remains. Granted I had plugged the machine into more than one receptacle attempting to diagnose the problem and got electrical pop sounds for my pains. (may have taken more than one run to get everything nicely vaporized) Welp . . . that’s all I got at this point. Purchase at your own risk. Personally I may get around to tracking down a new chip or some such. Quicker than sending a replacement machine from China on warranty ! ! ! Shame it went this way. I miss and need the little bugger. PS: peering into the motor with bright light I can see no indication of any damage. Turning it by hand it feels fine. No indication of voltage rating on the motor so I'm not energizing it at this point ; for all I know the board is a power supply (different voltage). Probably just 120v though. PPS : I would love to hear your experience ; shall I just try my luck buying another one ? These Walfronts are ten dollars more than I paid so that's got to make all the difference . . . right ?!?

Absolute unit I repair chrome books all day and i power through 40 a day