Flash II / TFSA98-CP

Hardcased Black TiNi / Drop Point / Partially Serrated

  • SOG Assisted Technology
  • Lifetime Warranty
Blade Shape Drop Point
Great all around blade shape, good for most outdoor and hunting tasks. Blade Shape
Blade Steel Type AUS-8
High grade stainless steel with excellent edge retention and rust resistance. Blade Steel Type
Handle Material Glass-Reinforced Nylon
A strong glass fiber-reinforced nylon. Abrasion and impact-resistant. Blade Handle Material
Handle Color Black
Locking Mechanism Piston Lock
Edge Type Partially Serrated
Offers the benefits of both straight and serrated edges in one blade. Blade Edge Type


The Flash II has got to be one of the coolest knives we've ever seen. Forget its wicked-quick blade access, that it handles like a race car on rails, or that it locks up like Alcatraz. It just looks and feels extraordinary. The Flash family of knives feature SOG Assisted Technology (S.A.T.), which employs a powerful piston lock that is easily released with a sliding button.

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Product Type Folding Knife
Finish Hardcased Black TiNi
Blade Shape Drop Point
Edge Type Partially Serrated
Blade Steel Type AUS-8
Hardness Rc. 57-58
Overall Length 8"
Closed Length 4.5"
Product Weight 3.10 oz
Blade Length 3.5"
Blade Thickness 0.13"
Show Complete Specifications

The Flash II has got to be one of the coolest knives we've ever seen. Forget its wicked-quick blade access, that it handles like a race car on rails, or that it locks up like Alcatraz. It just looks and feels extraordinary. The Flash family of knives feature SOG Assisted Technology (S.A.T.), which employs a powerful piston lock that is easily released with a sliding button.

The Flash II (Black TiNi) comes standard with glass-reinforced nylon (GRN) handle and black TiNi 1/2 serrated blade/clip/pivot. All Flash knives come standard with SOG's patent pending, reversible bayonet mounted clip that ensures the lowest, most discreet carry possible. We also had the foresight to incorporate an additional safety lock that gives added security when the blade is closed.

Full Spec

Full Specifications

US Standard | Metric

Overall Length 8" Closed Length 4.5"
Product Weight 3.10 oz Blade Length 3.5"
Blade Thickness 0.13" UPC 7-29857-99425-5
Product Type Folding Knife Country of Origin Assembled in
the USA
Locking Mechanism Piston Lock Opening Mechanism Assisted
Belt Clip Type Reversible Low-Carry Packaging Unibox - Display Ready
Engravable Yes Finish Hardcased Black TiNi
Edge Type Partially Serrated Blade Steel Type AUS-8
Blade Shape Drop Point Handle Material Glass-Reinforced Nylon
Handle Color Black Hardness Rc. 57-58


    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

Flash II is rated 4.8333 out of 5 by 108.
Rated 5 out of 5 by from Awesome over all I've had this about a month. I was nervous at first because of some reviews. People stated the lock was always being switched on in your pocket. This never happened to me. Over all great knife, very sharp out of the package. My every day carry
Date published: 2015-06-02
Rated 5 out of 5 by from The best This is my second Flash II. It's the best knife I've found. Top quality materials. Can't beat them.
Date published: 2015-05-24
Rated 5 out of 5 by from Great knife This knife is really slick. The ease of opening with spring assist is beautiful. The blade is wonderfully created. Again, this knife is really slick.
Date published: 2015-05-01
Rated 3 out of 5 by from well designed/poor warranty I have had the Flash II for less than a year. I carry it 60% of the time. I love the design and action of this knife. It is light, smooth, and extremely fast. It holds an edge forever. The only complaint I have is that my blade is chipping about a half inch from the tip. Customer service informed me that chipped blades are not covered by warranty. I haven't cut anything that should have caused the blade to chip. Overall it's a great knife. There are better warranties though.
Date published: 2015-03-27
Rated 5 out of 5 by from Excellent choice First and foremost, I love the inconspicuous clip. And the clip may be reversed for left or right side draw. Locating the clip at the BACK of the handle creates a natural grasp from the draw. Second, the assist is quick and easy, especially if you choose to remove the "safety". The fact that it is user-removable is a bonus! The blade steel holds an edge well. Overall I am very happy with this product.
Date published: 2015-03-21
Rated 4 out of 5 by from I like it. I like the end of handle clip. Inconspicuous in the pocket. One of the easiest opening knives I have owned. Just a flick of the thumb straight forward does the job. The release on the side of the handle is great for one handed closing. Light weight makes it nice to carry everyday.
Date published: 2015-03-14
Rated 5 out of 5 by from Tested for over a year Overall, this is one of the best knives I have owned for EDC. Its assisted opening feature is something that sets it apart from other products and now its spoiled me. The overall feel of the knife is solid, with the handle fitting my hand well (which is nice considering my hands are pretty large). Another review said its difficult to draw with it clipped in your pocket, but i disagree with this statement. If anything, the raised end of the clip makes it easier to draw by simply catching your middle finger on the clip and basically flinging it out of your pocket. Takes practice but easy once you get it down. The blade has some play (expected when dealing with assisted opening knives since they have to have some space to move) but not enough to bother anyone. My only dislike is the fact that I purchased this knife with a tanto blade. Although it looks fantastic, it is horrible to sharpen on a stone or even with files. Eventually, that nice angle it has goes away due to heavy sharpening. I now know to go with a more traditional blade style.
Date published: 2015-02-28
Rated 5 out of 5 by from Overall great knife Lightweight, extremely sharp knife with a fantastically quick opening mechanism. Although not a negative, I was surprised at how the knife is deployed when drawing from a pocket. If you can imagine gripping the clip within your pocket with the back of your hand facing forward, when drawing the knife you must rotate your hand so that the palm of your hand is now facing forward. At this point, your thumb will naturally be on the deployment stud. This is not a negative and may in fact be more efficient - although it was unexpected. Lastly, the clip is extremely sturdy and holds the knife in your pocket well. However, I have found that it is difficult to draw. A tradeoff between stability and quickness.
Date published: 2015-02-26
  • 2015-07-01T11:24CST
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  • 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.

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    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.

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    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.

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    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.

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

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    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.

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    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.

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    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.

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    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

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