PowerAssist / S66


  • Compound Leverage
  • SOG Assisted Technology
  • Lifetime Warranty

* Required Fields


The new PowerAssist takes multi-tools to a new level. This is the first in the world to house not just one but two SOG Assisted Technology blades. Start to open the main blades, which are available when the main tool is closed, and S.A.T. takes over to complete opening.

read more

Product Type Multi-Tool
Finish Satin
Blade Steel Type 420
Hardness Rc. 51-53
Tool Count16
3-Sided File Blasting Cap Crimper Bolt Grip Channel Bottle Opener Can Opener Full Serrated Blade Hard Wire Cutter Large Flat Screwdriver Medium Flat Screwdriver Needle Nose Pliers Philips Screwdriver Ruler Small Flat Screwdriver Straight Edge Blade V-Cutter Wire Crimper
Overall Length 7"
Closed Length 4.60"
Product Weight 9.60 oz
Show Complete Specifications

The new PowerAssist takes multi-tools to a new level. This is the first in the world to house not just one but two SOG Assisted Technology blades. Start to open the main blades, which are available when the main tool is closed, and S.A.T. takes over to complete opening. When not in use, these blades lock closed using our patent pending side release. Flip open the tool and experience the precision of the heavy-duty plier capability and large wire cutters. Smooth handle surfaces promote comfort on even the toughest jobs.

Download User Guide

Download the PowerAssist product information brochure, including maintenance instructions, warranty information, component lists, and included accessories (if applicable).

PowerAssist User Guide Size: (166.97 KB)


  • Handyman Club of America Approved!

    SOG is proud to announce that the PowerAssist has garnered the Handyman Club of America seal of approval, with an overall rating of 8.7 out of 10.

    Field Testemonials:

    "This top quality engineered multi-tool is probably the best I've seen and used. I was fortunate to be among the product testors. It is my opinion that if you can afford to spend $115 for this kind of tool you will be getting the best that is made."

    "The tool is very well made,has allthe everyday items built into it. I will keep it in my vehicle and use it as needed. The knives that are included are very sharp. The assortment of screwdriver bits/file will also be used as needed."

Full Spec

Full Specifications

US Standard | Metric

Overall Length 7" Closed Length 4.60"
Product Weight 9.60 oz Product Type Multi-Tool
Country of Origin Assembled in
the USA
Finish Satin
Tool Count 16 Lanyard Hole Yes
Packaging Unibox - Display Ready Sheath Included Yes
Sheath Color Black Sheath Details Ballistic Nylon (Material), Secure Clip (Attachment), Hook & Loop (Closure), Leather (Material), Belt Through Loop (Attachment), Snap (Closure)
Blade Steel Type 420 Handle Material 420 Stainless Steel
Hardness Rc. 51-53 Lock Blades Yes
Lock Tools Yes Assisted Opening Yes
3-Sided File Yes Blasting Cap Crimper Yes
Bolt Grip Channel Yes Bottle Opener Yes
Can Opener Yes Full Serrated Blade Yes
Hard Wire Cutter Yes Large Flat Screwdriver Yes
Medium Flat Screwdriver Yes Needle Nose Pliers Yes
Philips Screwdriver Yes Ruler Yes
Small Flat Screwdriver Yes Straight Edge Blade Yes
V-cutter Yes Wire Crimper Yes


    Compound Leverage

    Compound Leverage

    SOG's proprietary Compound Leverage technology works by employing multiple pivot points that generate greater handle travel in relation to plier movement. The result is a leverage advantage of approximately twice the power of a conventional multi-tool, which makes every cut smoother and easier.

    SOG Assisted Technology

    SOG Assisted Technology

    SOG Assisted Technology (S.A.T.) works through the balance of opposing high-tension coil springs. As you initiate the opening action, the force propelling your blade open becomes greater than the force keeping it closed. The result is a blade that springs open instantly once it is engaged, seemingly on its own.


Customer Ratings & Reviews

PowerAssist is rated 4.7174 out of 5 by 46.
Rated 5 out of 5 by from Solid tool I've had it for a few years now and it works great overall. I am a lineman and have carried it off and on at work for a while, it has held up great The blades came razor sharp out of box. I can shave my arms with it the pliers are super strong. All the locks works solid but are kind of hard to unlock at first but break in and are easy to operate now The assisted knives come out fast and are easy to operate I would recomend this multi tool I took a pic next to a PM2 for size comparison
Date published: 2015-07-02
Rated 2 out of 5 by from Out of all of the multitools I own... Out of all the multi-tools I own, this one has the very best pliers of any of them... Now that I have the one, single positive thing about this stool said, I will give a brief summary of my negative feelings about it. The bits/blades beak very easily, the cover thing is very inconvenient, and it comes off when opened sometimes. the tools clump when you open one, the others follow. The locks for the outside blades are inconvenient as well. It is not built well compared to the other tools I have (13 in all) This one would rank 3rd worst in build quality. As a mater of fact, I just had to place an order for two replacement bits for a total of $21. I'm very dissatisfied with the quality of this tool... But, I honestly mean it when I say, the pliers is amazing!
Date published: 2015-05-15
Rated 1 out of 5 by from i dont know what to say....... can not open that two blade by single hand at all, i have to pull it really hard with my both hands... tried to fix it but the screw is too tight ..... tell me if i use it wrong way, or ill never recommend it to my friends!(haven't take a video yet , may be later)
Date published: 2015-03-12
Rated 5 out of 5 by from Love this tool It's already proven its worth, great tool. Well built, love that the tools are replaceable. Good size and weight too. My only complaint would be the holster. Wish it had a belt loop as opposed to a clip; I've lost knives with sheathes similar in the past. But this one seems better, so we'll see...
Date published: 2015-02-02
Rated 5 out of 5 by from best tool I own I install windows for a living and I use my SOG every day. It has never let me down and is still as sharp today as the day I got it. Definitely worth the money paid.
Date published: 2014-11-17
Rated 5 out of 5 by from Easy to use, Power assist plyers works effortless. I bought this about 7 or 8 years ago and it still kickin, I work for a paramilitary security and believe it or not this tool get used alot and my friends and coworkers have use it and now they want one, no surprise of course I told them repeatedly this is tough, durable,and very easy to use in one hand. And if I were you reading this review I would get one right now!!!
Date published: 2014-11-15
Rated 5 out of 5 by from Great Feature Assisted Blade! Since I have had it in my hands I new it had finally found a permanent home!
Date published: 2014-11-15
Rated 5 out of 5 by from Goes with me I have had several brands and nothing holds up to the SOG! Broke a jaw on pliers but I should have known better than to use for what I did.
Date published: 2014-11-14
  • 2015-07-06T09:32CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.5
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_46
  • loc_en_US, sid_S66, PRD, sort_mostRecent
  • clientName_sog



    SOG Warranty Information

    All SOG products are guaranteed against defects in workmanship and materials for the life of the original purchaser. This guarantee is voided (as determined by SOG) by misuse, abuse, improper maintenance, or alterations of the product and does not cover any normal wear or tear that might occur. Using your SOG folding blade or fixed blade knife for any purpose other than cutting or puncturing is considered abuse and may void your warranty.

    Back to top

    Guarantee Claims

    All guarantee claims should be directed to the factory. U.S. claims should be sent prepaid and insured. For international claims: call, write, or email SOG's Warranty Dept. for information.

    We are not responsible for lost or stolen packages that do not arrive to our facility.

    SOG reserves the right to the repair or replacement of a product at our discretion. Products that are discontinued and not repairable will be replaced with a gift certificate of the last MSRP value, as determined by SOG, which can be used for a future purchase.

    Back to top

    Examples of Non-Warranted Items

    Rusted/spotted/stained blades or handles (coated or not), broken or bent knife tips, worn tool components, dull/chipped knife blades, scratched blade/tool coatings, worn/loose Kraton slabs, sheaths and pouches (if brand new sheaths are determined to be defective they are replaced separately from the knife/tool), and broken/lost thumb studs.

    Back to top

    SOG Unconditional Pocket Clip Warranty

    Pocket clips can be broken if they are accidentally caught on foreign objects while wearing. To help prevent such occurrences, SOG recommends that you wear your knife in your front pocket, with the knife inside your pocket. If, for whatever reason, your clip bends or breaks and you would like to receive a replacement, fill out the Clip Request Form, or email/call SOG's warranty department. Damage to a knife handle because a clip has snagged is not considered "normal," and any such damage will be assessed under warranty. Learn more about replacing pocket clips in Knife & Tool Care.

    Back to top


    SOG offers a sharpening service for our products at the minimal charge of $12.00

    Back to top

    Broken Blades

    In the unlikely case that your knife blade breaks, we will do a hardness test on it to see if it is within specs and therefore eligible for replacement.

    Back to top


    SOG will pre-determine the cost of repair or replacement of non-warranted items and communicate the estimated cost to the customer before any work is performed.

    Back to top

    Returning a product for replacement

    Include a brief note inside your package stating what you are returning, the claimed defect and how it failed. Also, include inside the package, your name, address, daytime phone number and email address to reach you in case we have any questions.

    If the item has sentimental value, please state that in the note. In some cases, items are replaced.

    Back to top

    Warranty claim address & contact information

    SOG Specialty Knives, LLC.
    Attn: Warranty Dept.
    6521 212th St SW
    Lynnwood, WA 98036

    For any other questions, either call, fax, or email SOG’S warranty department at

    Phone: 425-771-6230
    Toll Free: 1-888-40-KNIFE (405-6433)
    Fax: 425-771-7689
    Email: warranty[at]sogknives.com

    Back to top
You may also like