Cold Steel 2017 4-Max Demko Grey G10 Folding Knife 62RN

Model: CS-62RN
Manufacturer: Cold Steel
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Possibly the strongest folding knife on the market, the 4-Max from Cold Steel highlights the Tri-Ad lock system alongside a potent 20CV blade. Built in limited quantities in Italy, this knife was designed by knifemaker Andrew Demko and crafted to his exact specifications. He is well known for developing the Tri-Ad lock system which functions similar to a back lock but holds substantially more weight when put to the test (800 + lbs of free hanging weight). Its soul purpose is to deliver a folding knife with the maximum strength and performance possible with a 4" blade limit.

The Blade: The blade of the 4-Max is made from CPM-20CV steel, well regarded for its ability to both take and hold an edge. It's extra wide drop point blade is stonewash finished with an upper swedge that runs almost the full length of the blade. Everything is fully ambidextrous thanks to a set of dual thumb studs.

The Handle: The handle is made from 3D CNC machined, bead blasted Cool Grey American G-10 that will resist wear over years of use. The G-10 scales are secured to matte finish tumbled titanium liners and backspacer creating superior strength. The ergonomic, comfy handle is up to the challenge of even the biggest paws. It houses the Tri-Ad lock system and features a reversible Titanium clip for left or right handed use.

About CPM-20CV: Quickly becoming one of the top steels in use today this formula has been produced by Latrobe, Carpenter and Crucible which are all essentially the same composition. Although it has been a little slow to gain ground in the production world it offers extremely good edge retention and corrosion resistance putting it in the same ballpark with steels such as M390 and CTS-204P.

About the Tri-Ad Lock: The Tri-Ad lock system works basically the same as any lock back knife, pushing down on a spring in the rear of the handle releases the blade. The similarities stop there though, as it differs by adding a stop pin between the blade and backspring. This pin handles any pressure put on the knife and allows the spring to self adjust over time, resulting in a rock solid lock that can handle an absurd amount of weight in lock tests.


Overall Length 10.00"
Blade Length 4.00"
Blade Thickness 0.177"
Blade Material CPM-20CV
Blade Type Stainless
Lock Lockback
Closed Length 6.00"
Handle Thickness 0.625"
Handle Material G10
Liner(s) Titanium
Clip Material Titanium
Clip Position Tip-Up
Weight 10.00 oz.
Country of Manufacture Italy