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Ripple K405KXP PR


For immediate release.

Contacts: Rod Bremer, Lindsey Phelps, 1-800-891-3100 or 503-685-5015

Fax: 503-682-9680 E-mail:

Tualatin, Oregon, U.S.A.— January 19, 2010

In their first collaboration, Ken Onion and CRKT® introduce

their new Ripple™ series of folding frame locks with premium

stainless steel build and a stiction-free IKBS ball-bearing pivot.

Columbia River Knife & Tool® and noted knife designer Ken Onion are proud to

introduce their first collaboration together, the Ripple™ folding knife series.

This knife is noteworthy for its exceptional manufacturing quality, premium stainless

steel build, plus an almost unbelievable silky smooth and fast opening action thanks to

the use of the IKBS internal knife ball-bearing system.

The modified drop point blade has a high hollow grind, swedged top edge, a high satin

finish and Razor-Sharp cutting edge. Steel is premium Acuto, stainless, noted for its high

chromium and molybdenum content and hardness of 59-60 HRC. It is instantly opened

by pressing the blade flipper with either hand. For safety while closed, the blade has a

ball detent.

Even the best conventional blade pivot bearings have some degree of friction which

resists initial movement, or “stiction.” In contrast, the Ripple blade opening action is

almost friction-free due to the IKBS ball-bearing system. This innovative and simple

design places eight uncaged ball bearings on each side of the blade pivot in races which

are machined into the stainless steel handle. It is compact and adjustable at the blade

pivot screw if ever needed. Not only is opening and closing exceptionally smooth, the

IKBS system is durable and requires little maintenance, and yields a folder with great

rigidity and no blade play.

The Ripple K405 models are frame lock open build knives with stainless steel frames.

In typical Ken Onion attention to detail, the frame lock does not create an unsightly gap

in the right frame, but its cut is neatly integrated into the grip design of the frame, which

is CNC machined with a complex“ripple” textured pattern plus 44 small lightening holes.

The Ripple™ K405KXP receives a black titanium nitride coating, which we then hand

buff to give a pocket worn look, that is to lightly reveal the underlying stainless steel on

the high points. The Ripple™ K405BXP achieves the same effect, but with a dark

ultramarine blue titanium nitride finish.

Both models feature a removable stainless steel mirror-polished pocket clip, high-

mounted, and also with small CNC-drilled holes.


This knife combines brilliant design, custom knife quality, and advanced manufacturing

technology in a production knife with manufacturer’s suggested retail price of only



Ripple Black Pocket Worn


High Satin blade finish with Black Titanium Nitride frame coating

Pocket Worn, Razor-Sharp Cutting Edge

Ripple Blue Pocket Worn


High Satin blade finish with Blue Titanium Nitride frame coating

Pocket Worn, Razor-Sharp Cutting Edge


Length: 3.125” (79 mm)

Thickness: 0.10” (2.5 mm)

Steel: Acuto, 59-60 HRC


Handle length: 4.375” (111 mm)


Overall length: 7.50” (191 mm)


2.9 oz. (82 g)


$125.00 US

All CRKT knives are protected by the CRKT Limited Lifetime Warranty.

Columbia River Knife & Tool is dedicated to producing knives, tools, and accessories

of uncompromising quality and selling them at affordable prices. CRKT products are

distributed through specialty retail, sporting goods and cutlery stores that offer customers

knowledgeable service and are available from or other reputable web site


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