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Mike's Arrow (K329)/PVD with retro washed.

Mike's Arrow (K329)/PVD with retro washed.


Important announcement:  We are moving the drop date to early August.



Designer: Waysun Johnny Tsai (Puertochinko)






Around 2007, my book How to Stop as Attacker in 5 moves or less came out. I was featured on the cover of several martial arts magazines and filmed and produced back-to-back self-defense DVDS for several companies.


In these magazine articles and DVDs, I used many knives and impact weapons from several well-known knife companies, including TOPS KNIVES.


I was hired by a certain knife brand to film a series of Tactical Pen training DVDs for them. We filmed the DVDs, and they flew me to my first SHOT SHOW in Las Vegas, Nevada, around 2010. As I mentioned, they flew me out, and my job was to promote their tactical pens and hand out DVDs to anyone walking by their booth.


I had brought a rolling Pelican case full of my DVDS and decided to visit all the companies that so kindly sent me knives to feature in my projects. I wanted to have face-to-face introductions and shake hands with everyone who had helped me along the way.


At the TOPS KNIVES booth, I was met by the company founder/owner, Mr. Mike Fuller, and his right-hand man, Leo Espinoza. They were super friendly, and Mike advised me that I was a “rising star” in the industry and that they wanted to make a knife for me. I said sure, shrugged it off, and walked around the SHOT SHOW, amazed and overwhelmed by the eye candy like everyone else.


I stopped by the TOPS booth again, and Mike again reiterated that they wanted to make a knife for me. Again, I heard him, but I didn’t at the same time, so I just said “ok” and continued to bounce around the show.


By my third visit to the TOPS KNIVES booth, Mike clearly understood what he needed to do. He grabbed me by both shoulders to hold me still, looked me in the eyes, and said, “Johnny, we want to make a knife for you.” We looked over at Leo. Leo nodded in agreement, and I said, “Oh,” it had finally registered with me what Mike was saying and doing. Mike was launching me into the industry.


Our first design was the C.U.M.A. Evolution; it came out and was immediately in a centerfold article in Tactical Knives Magazine. The knife was successful. I called Mike and said that was fun and “let’s do it again”. I worked on my first fully self-designed knife, the C.U.M.A. TAKRI, which eventually became the knife of the GI JOE Commando Snake Eyes in all the comic books drawn by artist Robert Atkins that IDW Comics published. This knife was also a hit and opened doors for me to work for several other knife companies.


Over the years, Mike Fuller became a direct mentor and big brother figure to me. We talked and emailed all the time. He NEVER failed to ask me about my wife and kids. He was a true friend who unfortunately passed away a couple of years ago.


I had never ventured into any of this with the idea of becoming a knife designer; I was fine using other people’s knives. Mike Fuller saw something in me and brought it out in full force. Mike launched me into the knife industry as one of his arrows. Here I am, almost 15 years later, going strong, with new designs being produced almost every year. And yes, I am still working with TOPS KNIVES, now being mentored by Mike’s successor, the one and only Leo Espinoza.


If it weren’t for Mike Fuller (and Leo), I would be in the industry doing what I am doing. Mike’s Arrow is probably my most important and personal design today, as it is a full dedication to my old friend Mike. He was indeed one in a million.


Rest easy, Big Brother, until we meet again, I will work non-stop to make you proud.





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  • Specs


    Knife Type

    Fixed Blade  (CNC machined from a solid bar


    Knife construction

    Full tang

    Overall Length


    Blade Length


    Cutting Edge


    Blade Thickness


    Type of grind 

    Scandi grind with micro convex edge.

    Blade Shape

    Spearpoint (Sharpen at 35 degrees for a better penetration.)

    Blade Steel

    Bohler K329

    Blade Finish

    PVD retro washed

    Handle Material


    Knife Weight


    Weight w/ Sheath


    Sheath Included


    Sheath Material

    Black Kydex +2 belt clips 


    We accept return items. 

    You may return the unused item in its original packaging within 14 days.  The buyers will prepay shipping and handling back to us.  Refunds will be issued by the same form of payment we received.

    Please contact us before sending back any items. Please note that we may request you to email and provide the damaged or defective merchandise photos.  




    "We can sell and ship our products worldwide, including  USA, Canada, Western Europe.  The courier we are using will be DHL Express.

    Special note:

    • The customer is responsible for all fees and taxes - we charge only for our shipping costs.
    • Customer is responsible for knowing their laws and assumes all risk for the value of the package and our shipping costs, should it be confiscated at customs.
    • If the package is found to be undeliverable, the customer is responsible for the return shipping cost.
    • The customer must pay all return and replacement shipping costs.
  • Warranty

    Thank you for supporting Work Tuff Gear! We warranty each Work Tuff Gear knife against defects in material and workmanship for six months after purchase. We will repair or replace it with a new Work Tuff Gear knife (shipping fees and associated costs not included).  Of course, Work Tuff Gear does not warranty its products against normal wear or misuse. Work Tuff Gear knives are not intended to be used as hammers, chisels, pry bars, or screwdrivers. Although we thoroughly test our knives, our warranty does not cover damage due to impacts with rocks, bricks, metals, or other high-hardness objects.  If your knife was damaged due to misuse, our repair department can analyze and repair it for a reasonable fee (shipping fees and associated costs not included).  The warranty does not cover normal wear and tear, resharpening, reprofiling, damage caused by misuse, lack of regular maintenance, or disassembly.  Remember, anything can break or fail if subject to sufficient abuse. So please do not misuse this product.

    Please send proof of your purchase order from our site or authorized dealers to claim the warranty.



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