Ontario Knife Co.

Ontario Rat Synthetic Custom Builder

(18 reviews) Write a Review
  • Ontario Rat Synthetic Custom Builder
  • Ontario Rat Synthetic Custom Builder
  • Ontario Rat Synthetic Custom Builder
  • Example: Bronzed Spacers
  • Example: Bead Blasted Blade
  • Ontario Rat Synthetic Custom Builder
  • Ontario Rat Synthetic Custom Builder
  • Ontario Rat Synthetic Custom Builder
  • Ontario Rat Synthetic Custom Builder
  • Ontario Rat Synthetic Custom Builder

file types are bmp, gif, jpg, jpeg, jpe, jif, jfif, jfi, png, wbmp, xbm, tiff

file types are bmp, gif, jpg, jpeg, jpe, jif, jfif, jfi, png, wbmp, xbm, tiff

Frequently bought together:


The Popular EDC Knife from Ontario Knife Co, the Rat II, sporting Nylon handle scales and D2 blade steel. 

Custom Options for handle color, blade and clip finish, hardware torching options, Handle and blade Decal additions, and polished finished edges on modified blades. All done in house and upon order here at Way of Knife & EDC Gear House! 

NOTE: A free 600 grit Working Edge comes included with all blade finishes, if you'd like to upgrade to a polished edge, please use checkbox provided.

NOTE: Custom Rats with etchings, engravings, or any personalized markings are disqualified for any returns.

NOTE:  With Custom decals, PLEASE keep in mind the smaller the decal the more of a possibility that some details are lost. Most etchings are done with a laser and can achieve great detail but keep expectations realistic, we will be in contact with you to discuss other options if your design does not work.

Ready to ship in 10-25 Business Days depending on stock availability and current mod queue time. 



  • Overall Length:7.00"
  • Blade Length:3.00"
  • Cutting Edge:2.75"
  • Blade Thickness:0.09"
  • Blade Material:D2
  • Blade Style:Drop Point
  • Blade Grind:Flat
  • Finish:Satin/Black stock
  • Edge Type:Plain
  • Handle Length:4.125"
  • Handle Thickness:0.42"
  • Handle Material:Nylon
  • Color:Tan stock
  • Frame/Liner:Stainless Steel
  • Weight:2.75 oz.
  • User:Right Hand, Left Hand
  • Pocket Clip:Tip-Down, Tip-Up
  • Knife Type:Manual
  • Opener:Thumb Stud
  • Lock Type:Liner Lock
  • Brand:Ontario Knife Company
  • Model:Model 2
  • Model Number:8828
  • Country of Origin:Taiwan
  • Best Use:Camp/Hike
  • Product Type:Knife
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18 Reviews

  • 5
    Ontario Rat D2 custom build

    Posted by Eric Aguiar on Oct 31st 2020

    Very happy with the way my custom knife came out!!! Will definitely recommend it!!!

  • 5
    Rat 2 Builder is fun and amazing deal!

    Posted by Matthew Jay on Oct 28th 2020

    They posted some awesome custom scales on an IG story, I immediately bought them, and then they encouraged me to check out their rat 2 builder. So awesome! Wish I wouldve carved the spine but maybe ill send it back in with another custom im going to do.....

  • 5
    Ontario Ray D2 Custom Build

    Posted by Eric Aguiar on Oct 22nd 2020

    Light weight , easy to open with thumb and flix of hand. Fits perfectly in hand perfect for a every day carry!!

  • 5
    Rat 2 custom

    Posted by Jeff on Oct 7th 2020

    Received knife within a week exactly as ordered. Tons of options. I got white g10 scales with black blade and black backspacers

  • 5
    rat 2

    Posted by Colton Z Dynes on Aug 31st 2020

    beautiful work, very satisfied. customer service was very friendly. quick turn-around.

  • 5
    Custom R2D2 very good work

    Posted by Edwin Ochoa on Mar 19th 2020

    Purchased a R2D2. Customized the handles and blade. Work came out excellent. Very different and personalized . Good quality work!

  • 5
    Rat Builder

    Posted by Eric on Aug 8th 2019

    I recently ordered and quickly received an Ontario Rat 2 with a beautiful working finish (advertised to be both blade and clip) and everything else standard. When I received the knife, the clip I got was the standard black coated clip, not the working finish that was to be matching the blade. That being said, after reaching out to WOK about this, Marcus had told me that it was an accident and was more than willing to handle this issue promptly and professionally. He either offered to pay for return shipping, or if I lacked the tools to remove the clip myself, he offered to send me the T6 driver to be able to send the clip back to WOK to get the proper finish. Yes, there was an error on their side, however, it would be unfair of me to not address his completely professional, respectful, and quick responses and action. Despite this little hiccup with my order, I can easily rate this product 5 stars and I have no doubt that should any problems occur, I can reach out to WOK to have it solved. Something to note, before ordering I asked Marcus if the blade finishes also come with a sharpening, which he clarified that it is included. Not quite a mirror edge but I'd be lying if I said it wasn't sharp! Another thing, my knife came with an uncentered blade but after disassembling and cleaning as well as tinkering with the pivot, the issue has been resolved. Why choose this over sending in your current Rat? Shipping, the price of the finish, as well as the price for sharpening (should you choose to get it) would basically equate to the price of this Rat builder. Materialism triumphs over all, just get another Rat with your blade (and clip) finish of choice (as well as other modification options at your disposal)!

  • 5
    Rat 2 custom

    Posted by Peter St.John on Jun 18th 2019

    I couldn't be happier. There's not 1 part of this knife they didn't completely nail! The grey scale color, the working finosh blade with my rat picture etched in. The blue/purple standoffs that provide a contrasting color. Its freaking perfect. Plus, the price is on point. Especially for what you get. If you're thinking of getting 1, do it. Thanks Marcus and Ben!!

  • 4
    R2 D2 custom

    Posted by Sam Lambert on May 7th 2019

    This knife turned out great! Better than I could have ever guessed!

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