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SOG Specialty Knives & Tools SJ51-CP SlimJim XL Knife with Straight Edge Assisted Folding 4.18-Inch Steel Blade and Bead Blasted Handle, Satin Finish

4.4 out of 5 stars 66 customer reviews

List Price: $80.00
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  • Constructed from a single piece of steel
  • Tactile bumps and cutouts for a sure grip
  • Patent-pending safety lock - acts as double lock in open position
  • Slimmest assisted knife in the world
  • Straight edge, 4.18-inch AUS-8 steel folding blade has a clip point shape with a satin finish
  • SOG Assisted Technology provides one hand blade opening
  • Handle is made of 420 stainless steel with a bead blasted finish
  • Comes with a limited lifetime warranty
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$49.12 & FREE Shipping. Details Only 11 left in stock (more on the way). Ships from and sold by Amazon.com. Gift-wrap available.

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  • SOG Specialty Knives & Tools SJ51-CP SlimJim XL Knife with Straight Edge Assisted Folding 4.18-Inch Steel Blade and Bead Blasted Handle, Satin Finish
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Product Description

Product Description

The SOG Specialty Knives & Tools SJ51-CP SlimJim XL is constructed from a single piece of steel and stands out by being the slimmest assisted knife in the world. Made of AUS-8 steel with an attractive satin finish, the 4.18-inch straight edge, folding blade has a clip point shape that allows a quicker and deeper puncture upon insertion, sharpens easily and makes quick work of any task. When you start to open the blade, SOG’s patented S.A.T. (SOG Assisted Technology) takes over and high-tension coil springs propel the blade the rest of the way open for fast, easy, one-handed access. This knife features a thumb stud with a Lockback to provide additional safety while the knife’s being used in the open position. The ergonomically contoured and well balanced handle has a bead blasted finish and is made of 420 stainless steel that will fit comfortably in your hand. A reversible pocket clip extends from the back of the handle, allowing the SlimJim to sit low in your pocket for the most discreet carry possible. This feature can also be used as a money clip. This slim knife has a closed length of 5.18-inches, overall length of 9.36-inches, blade thickness of 0.08-inches and weighs 2.7-ounces. The SOG Specialty Knives & Tools SJ51-CP SlimJim XL Knife with Straight Edge Assisted Folding 4.18-Inch Steel Blade comes with a limited lifetime warranty that protects against defects in manufacturing and materials. Each SOG product is created with the help of company founder and chief engineer, Spencer Frazer. Known for their uncompromising style and performance, these knives and tools showcase innovation, dependability and a unique, futuristic style that has garnered awards and recognition worldwide. SOG products have also won favor among law enforcement, military and industrial customers that rely on their tools to perform flawlessly in the toughest, most adverse conditions.

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Constructed from a single piece of steel, the SlimJim XL technical assisted folding knife in silver (model SJ-51) from SOG Specialty Knives and Tools stands out by virtue of simplicity and minimalism. It doesn't try to be the biggest or the loudest in the crowd. It is unobtrusive but always there when you need it. And it's one of the slimmest technical assisted folding knives on the market (.078-inch blade width) with a 4.18-inch stainless steel blade.

sog SJ-31 hand
The SlimJim XL technical assisted folding knife in silver (view larger).

 

sog SJ-31 closed
Weighs just 2.7 ounces (view larger).
At a Glance
SJ-51 SlimJim XL 4.18-Inch Assisted Folding Knife
At a Glance:
  • Ultra-slim technical assisted folding knife

  • 4.18-inch AUS-8 stainless steel straight edge blade

  • Thumb grooves on the handle for controlled grip

  • Trademark SOG reversible low-carry pocket clip

  • Limited lifetime warranty
At a Glance

Start to open the blade, and let SOG Assisted Technology (S.A.T.) finish the action with a bang, using one of the surest assisted technologies out there. Tactile bumps and cutouts aid in control while all features are purposeful and functional. The patent-pending safety is used to insure the retention of the blade in the handle as well as acts as a double lock in the open position.

Thumb grooves on the stainless steel handle provide a comfortable and controlled grip. It also includes a reversible bayonet pocket clip for a close carry and quick access. All SOG products are guaranteed against defects in workmanship and materials for the life of the original purchaser.

Caring for Your Folding Knife

Keeping your knife clean, dry, oiled and sharp are the primary defenses against corrosion, wear, and potential injury. Be sure to clean the blade and handle after each use--however, do not soak your knife in water. A mild solution of soap and water should remove any dirt and debris that may have accumulated during use (avoid harsh detergents such as laundry or dish soap, and chlorine products). To remove any debris from inside the handle you can use a toothpick for any visible lint or dirt, or a Q-Tip for smaller amounts of dirt and debris.

After cleaning or after exposure to moisture be sure to completely dry your knife blade and handle, taking special care with any sensitive handle materials. Use a soft cotton cloth or chamois and a small amount of moisture-displacing oil (such as WD-40 or 3-in-1), on the blade only, to prevent water spots and oxidation from forming.

Fingerprints and weather are the primary causes of rusting or corrosion on a knife blade. To keep your knife looking its best, SOG recommends that you give your blade a light coat of oil after each cleaning, and prior to long-term storage. Be sure to also apply a Paraffin-based oil to the pivot point, which will not only keep the action of your blade smooth but will repel dirt and debris which could impede the blade's action.

  Specifications
Blade length 3.18 x 0.78 inches
Overall length 9.36 inches
Weight 2.7 ounces
Steel AUS 8
Edge Straight
HRC 56-58
Finish Satin
Handle 420 stainless

What's in the Box

SJ-51 SlimJim XL 4.18-inch assisted folding knife

SJ-52 duo
One of the slimmest technical assisted folding knives on the market (view larger).

Product Information

Technical Details

Part Number SJ51-CP
Item Weight 2.7 ounces
Product Dimensions 9.4 x 0.2 x 1.2 inches
Item model number SJ51-CP
Discontinued by manufacturer Yes
Size unknown
Color unknown
Material 420 Stainless steel
Item Package Quantity 1
Number Of Pieces 1
Number of Handles 1
Batteries Included? No
Batteries Required? No
Warranty Description lifetime limited warranty

Additional Information

ASIN B0074FH7YG
Customer Reviews
4.4 out of 5 stars 66 customer reviews

4.4 out of 5 stars
Best Sellers Rank #46,864 in Home Improvements (See top 100)
#313 in Home Improvement > Power & Hand Tools > Hand Tools > Knives > Pocket Knives & Folding Knives
#680 in Home Improvement > Power & Hand Tools > Hand Tools > Knives > Hunting Knives
#1,550 in Sports & Outdoors > Sports & Fitness > Hunting & Fishing > Hunting > Knives & Tools
Shipping Weight 5.6 ounces (View shipping rates and policies)
Date First Available September 1, 2011

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

By Rhonda Roberts VINE VOICE on November 20, 2012
Verified Purchase
As with my previous knife review (kershaw tremor) I collect knives. I don't do tactical things. I don't EDC. I saw this knife and thought it looked VERY VERY cool. And I was not disappointed. A nice long blade (not as organic as the Tremor) with plenty of reach. It is spring assisted open and of a lock back design. The handle is THIN. Crazy thin. It would almost fit in a wallet if you had one long enough. Super light weight. With a clever little slide lock to hold the knife open and shut. This is the sort of knife you shove in your pocket and forget its there. That is until you try to board a plane. Enter a courthouse. Or go anywhere were the possession of sharp objects is frowned upon.
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I am a SOG knife fan. This new design was introduced at shot show 2012 and I have been waiting for it to become available. I finally found it, bought it, now I don't really like it.
It has the tightest action on a pocket knife I have ever experienced. VERY hard to deploy blade for the first 50-100 openings. I finally got it broken in a little and noticed a few problems. The blade centering when closed is terrible, the blade is all the way to the right and scrapes every time I close it. The knife itself feels extremely flimsy, I feel that I can easily bend/break the blade off. It looks very cool, feels good in my pocket, but the blade centering and general flimsy feel might earn this knife a return.
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I love this knife, I have carried it everyday since it came it about 2 months ago. Unbelievably thin and light, and excellently made. Have not noticed any noticeable dullness in the blade in use. The only slight downside to the knife is the lock and release on the knife, they both work excellent just very different than any other knife I have had before, including all the SOG's I have. But I would highly recommend this knife to anyone looking for a large but easy to carry knife, very very good value for the price.
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Just bought this knife. The safety issue appears to have been fixed. At Least on this one. It is tight and does not move on it's own. Also; right out of the box; opening the knife using the thumb stud; blade flies right open quick. Everytime. Never had it not fully lock.

It's quite a lot of blade to marvel at. Feels good in hand. Quite a serious and unique knife with an interesting design. And I've got about 40 different folding knives and fixed blades.

The length of this blade is reminiscent of the Spyderco Police model. That's a really great knife too.
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I was iffy about buying this knife, one because of it's price, and two because I'd read some negative reviews.
Some people had said that the knife opened in their pocket because it was so loose. I did NOT have this problem. In fact, it's so tight that it's going to take several uses before it gets easier to open. Using the thumb nub once is enough to dent your thumb pretty deep.
Some people said that the thumb nub was screwed on and would unscrew. I didn't have this problem.

Pros:
It's a deep-pocket knife, so it will sit in your pocket with almost nothing but the clip to show.
It DOES have a blade lock, but it locks the blade OPEN, not closed. Not only do you not need it to lock closed- because it stays closed perfectly well on its own- this is actually useful because the lock is on the spine. You have to push the lever on the spine of the knife to close it. So if you're cutting something, you will grip the knife, unlocking the knife. So there's a slider that you can slip under the lever to keep it from unlocking.
It's super thin and discrete.
Sharp out of the box. Cut myself several times just slightly touching the blade.

Cons:
The knife is very difficult to open- especially using the thumb nubs. I've been opening and closing it a lot and it's still tough to open with one hand. I oiled the joint- and it helped- but it's still very difficult to open. At least it won't pop open in your pocket.
There are ridges on the edge of the handle- not sure what for- but they're pretty jagged, so they can dig into your hand pretty hard.
If you open the knife with your hand along the top of the joint, you can pinch yourself pretty well.
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I like that it is thin, and it's very light. I hate the lock, which I feel is weak in comparison to the liner locks I'm used to.The assisted open doesn't work that well, it always pops back at me unless you sling it open like a regular knife with thumb holes. The clip snagged and bent very easily, and the handle is already rusting after about two weeks. I do like the length of the blade, but because the blade is so thin and narrow it's a bit unwieldy when using it. This is my first SOG knife, but I don't think I'll be buying another one.
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I got this one and the sj33 tanto this one it took a bit more to break this one in but like any knife I loosened the adjustment screw (torx screw) and oiled and then over tightened then after working for a few minutes adjusted it properly the torsion bar though was a bit weak at first it was having problems opening it so I flexed it out a bit and after open and closing it for a while it has no problem opening now the blade comes very sharp but that is no reason to buy a knife since you will need to sharpen any knife eventually but it holds its edge very well and has a good blade angle.
I think every knife should be cleaned and adjusted every so often when you use it things settle loosen and get dusty I do this with every knife I own.

I have had no problems with the safety's and am very glad they are there I like the security of locking it open and locking it closed I will gladly spend another half a second to know it won't open in my pocket or close on my hand. It also seems like should I want to remove it (which I have no desire to) it could be done without any issues.

The knife threw open a bit slower than the tanto and other assisted open knives at first the blade is longer so I felt that was the cause but it opens every time now no problem. ( now it's been a few days and it snaps open quick and clean every time I think the torsion bar just needed to move a bit and had probably been sitting closed for a long time)

The knife is thin and long it's just over two quarters thick (the coin) so it takes a minute to become familiar with it but becomes second nature in a day or two.

I love it and would get it again it is very discrete and only the clip is visible when it's away it's a little long but very nice confident blade.
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