Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: does any knows how much torque do 20V Li  impact driver attachment delivers?
Document: Turns out they have a $35 or so corded base unit that combined with this attachment ends up costing me around $70 for a corded impact driver with a spare drill/driver attachment to boot. This is at least $10 cheaper than the Porter Cable corded impact driver and a much more versatile system. I imagine this thing would be handy on the Li-Ion cordless base as well.Performance wise ignoring all other factors, it hammers away like the other cordless impacts I have tried.
I purchased this with the 20v lithium Matrix driver. I used this attachment right away to take down a staircase railing. This works so much better than using a drill. With the impact it creates a pounding "impact" when the screw (in this case) is too tight to move. This really gets a stuck screw moving. The input is the standard 1/4" hex so all the normal removable tip screwdriver attachments just fit in. It works great.
I recently got a Matrix cordless drill kit (20V with chuck, jigsaw and sander), and was really looking forward to adding this attachment into the mix, and maybe I'm not using it right, but I'm somewhat underwhelmed by this Impact Driver. I love the whole concept of the Matrix series with the interchangeable attachments - especially since my old B&D; 14.4V Firestorm Cordless Drill (FSD142) with the quick connect chuck with the bit holder underneath has bit the dust for the second time.
No. I have every one of them in another form. But I like having a cordless interchangeable option. My Dewalt 18V impact driver blows this Matrix 20V Lithuim Ion out of the water. But for 95% of what it gets used for it's fine. I even reach for it more often now. These tools aren't perfect.
I thought of this attachment as the missing link toward me being to continue working as I've been accustomed to over the years using the Firestorm quick connect system, but...Granted I haven't been able to use it that much since I've gotten it (that will change next month though), but after reading the description of what this driver is supposed to do, I'm not seeing any improvement in performance over just putting a bit into the chuck of any cordless drill.
Attaching wood-to-wood, I didn't need to drill any pilot holes to drive 1 3/4" wood screws perfectly and fast.It is effortless to change from standard drill-head to impact driver; pop out the first and just snap in the second. This has changed the way I approach projects to the point where I simply do more because the impact-driver makes it that much easier.
Highly recommended addition to Craftsman Bolt-On 20 Volt MAX Lithium Ion Drill/Driver Kit Model# 16496. Order this impact driver attachment with confidence.
So I don't NEED another drill, or impact driver. But the novelty of the interchangeable heads appealed to me.SO... I picked up the base unit, and the attachments the big box Home something store was selling *the impact driver, detail sander, trim saw, jigsaw, and the oscillating tool attachment.
Feel free to take this with a grain of salt as i'm learning about power tools all the time and this is my first impact driver. For lack of having anything particularly in need of impact-driving, i decided to use this attachment to tighten some screws on Sauder furniture and compare it to the normal drill's power. I have the 20v cordless drill this works with.After nearly driving the screws through the pieces of wood that build the furniture, i decided this is pretty darn strong.
Essentially the blower and weed whacker and charger were free. THEN I headed over to Sears, where they sell the competitive Bolt-On version. The clerk told me it wasn't compatible, but I came prepared with the impact driver and a charged battery. I popped the battery in their display model, and the impact driver head on and voila! It worked just peachy. The Craftsman version had a hammer drill attachment and an air inflation tool, so naturally I picked those up as well as their bag.
Answer: yes