Columbia River K405BXP Ken Onion Ripple 3.125" Plain Blade, Blue Handles
CRK405BXP: Ripple Blue Pocket Worn
Columbia River Knife & Tool
He's back. He's here. Ken Onion Ripple.
In their first collaboration, Ken Onion and CRKT introduce their 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.
This Ripple KX405 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 KX405KXP receives a blue 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.
- KX405KXP: High Satin blade finish with Blue Titanium Nitride frame coating Pocket Worn, Razor-Sharp Cutting Edge
- Blade Length: 3.125” (79 mm)
- Blade Thickness: 0.10” (2,5 mm)
- Steel: Acuto, 59-60 HRC
- Handle length: 4.375” (111 mm)
- Overall length: 7.50” (191 mm)
- Weight: 2.9 oz. (82 g)
Developed by Chris Reeve, it functions like a liner lock but the lock is comprised of one of the handle scales. It's an extremely strong and easy to manipulate lock.
Includes a pocket clip for easy accessibility and a more secure carry.
Stainless Steel knife handles provide strength and durability while using chromium oxide to create a rust-resistant barrier.
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