largest bolt I can break loose with it is 1/4"(7/16 hex),or 5/16(1/2 hex),if it's not rusty.This is
about what I expected from a impact this size. I break bolts loose with a ratchet,then use the impact to spin them off.When installing,I spin them on with the impact and do the final tightening with a ratchet
or torque wrench. So basically,I use it like a modern version of a Speeder Handle,and it works good for this.Buy this, if you're home mechanic to fix your own or friend car or do something around the house, do not expect this little thing to spin off a lugs nut (Home mechanic do not take a tires off every week, don't you ? just break them loose with breaker bar and use this to spin them off and put them back then use torque wrench after)
I tested this tools to see how much torque of this tools can break off by torque down one of a lug nut, starting at 30 ft/lb and gradually increase up to 50 ft/lb and this thing give up at exactly 50 ft/lb, so here you all know this thing will break loose almost anything inside your engine bay, a few sample here for some of you may want to know how / what of a bolt size used inside your car
Base on some BMW car Spec.
Valve cover m6 bolt use 89 in/lb (7.3 ft/lb)
Oil pan gasket bolt m6 bolt use 89 in/lb (7.3 ft/lb)
Belt pulley m8 bolt use 18 ft/lb
Water pump m8 bolt use 18 ft/lb
Alternator bolt m12 bolt use 35 ft/lb
Hope you enjoy
Thanks
Buy DEWALT DCF813S2 12-Volt Max 3/8-Inch Impact Wrench Kit Now
First off I should say that I am not a professional in any field that would use this tool, so my comments are made from the standpoint of a layman making casual use of this product. That said, I am very happy with the performance and quality of this impact wrench.The product itself has a nice, solid feel to it. The grip is comfortable and both the trigger and the switch to change the direction of the drill are conveniently placed. The body is sturdy and light enough for continual use. Two battery packs came with the unit so that you can always have a fully-charged battery to use. The pack slides on a locks easily, and removal is the same way.
As for performance, I feel the wrench has enough torque to get most normal jobs done. Start-up to full-speed is instantaneous when depressing the trigger all the way, and it also has a nice control over the variable speed aspect although the instructions caution against varying the speed too often because that will shorten the life of the wrench. And of course it is very handy having the automatic part of the wrench to save the trouble of having to manually tighten or untighten things.
There is a ring of three white LED lights around the drill part that comes in handy to see what you are doing when the room lighting isn't sufficient. It also comes with a nice little carrying case. I found that sockets click on and off quite easily.
All in all this is a solid, well-built product that should last a long time.
Read Best Reviews of DEWALT DCF813S2 12-Volt Max 3/8-Inch Impact Wrench Kit Here
great size good tightening torque but will only remove 40ft-lb tightned bolts. Would be nice to remove as tight as it tightens but for the size and the lights in the end its probably worth the moneyWant DEWALT DCF813S2 12-Volt Max 3/8-Inch Impact Wrench Kit Discount?
Holy cow this thing is so good. I just bought this off the mac tool truck today, and man let me tell you what, it was worth it! I work in a heavy equipment garage, and this thing ripped through bolts on the body of bolts underneath the truck i was working on. Have not tried to take anything crazy hard off yet, I dont think this was made to.
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