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Cage Bearings
Pivot: 6mm
Ceramic Bearings: 1/16 in (13 ball)


Regular price $11.99

The new bearing compatibility list is now live, check it out here!

Cage bearings that allow more balls to be placed around the knife pivot than standard cage bearings. Which provides more support for the blade and decreasing stress on each ball. The ceramic balls are captured in the disc but are still free floating to prevent binding.

Includes Grade 5 ceramic bearings pre-installed.

  • 22% increased blade support over caged bearings of same size
  • Improved ball pathing around pivot
  • Less pivot screw tightening required
  • CNC machined from solid phosphor bronze


ID OD Disc Ball
0.238" 0.422" 0.050" 0.0625"
6.04mm 10.72mm 1.27mm 1.59mm


Ordering details

  • One set equals two individual cage bearings

Customer Reviews

Based on 24 reviews
Beautiful engineering

Bought these for one of 2 x Civivi Bullmastiff folders - other one has Skiff solid washers for grit resistance. *Precise* fitment, beautiful manufacture, complete satisfaction. There is *significantly* more material in these than the original bearings supplied with knife. Top quality, good value. 10 days from order to arrival in UK is fine. Would perhaps have been good to get an "item on its way" shipping email? Recommended.

D.S. Kidman
Great upgrade, fast shipping

2nd knife I’ve upgraded with skiffs, butter smooth action on both, a must have for every future knife purchase I make

Scott H
Perfect fit for both intended knives,

I bought 2 of these 6MM-1/16-(13) skiffs, one for my Acrcane Designs Abyss, and one for my TwoSun TS177 Maverick.
They fit and function perfectl in both knives!!
A couple notes: I had originally just slapped the most common sized TwoSun Skiff bearing the 1/4”-1/16(13) into my TS177 months ago, now this was before it had made it onto the compatibility chart, and although that size also did indeed fit in and worked well, there was a slight amount of play, that thr 6MM didn’t have!
but they still increased the action and increased lateral blade stability over the OEM nylon/cermaic, but these 6MM were a perfect fit! It is all buttery smooth goodness!

Now Onto Arcane’s “The Abyss” as anyone that has taken apart an Abyss will know, lots of parts, hidden screws and holy guacamole that pivot is tight!! Almost needed the a punch to get it out! But once you do, and you see the thin, Much cheaper looking and flimsy feeling Open sided caged Reate OEM bearings, I honestly wasn’t sure the thicker looking skiffs would fit, but hells yeah they sure did! They Absolutely improved the action, and lateral blade strength as well!

This got me thinking, It makes you wonder why a manufacturer of a $400+ high quality production folder doesn’t just make the $9-13 buck investment in skiffs, or less as they would be buying in bulk etc.?? Whatever. 🤷🏼‍♂️ All I know is I’m gonna keep buying them, they’re well worth the investment for me, keep on kicking butt and making the best caged bearings on Earth Steve Skiff 🔥 ⚔️🤙🏼Incredible work brother!!

Provides a great and consistent action

Installed on my full sized Civivi Bullmastiff. They used a 6mm pivot on this model rather than the normal 5mm. Bearings fit snugly in the blade cutouts but move freely once installed. Blade centered up perfectly and the action is great as always!

Jason Waterbury
Skiff Bearings

The skiffs definitely made the action better on my knives, & I will definitely recommend and definitely get more for other knives. They arrived pretty fast also, that’s always a plus!! They’re definitely worth the money without a doubt!!