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4.9 stars, 3,468 reviews

Blunt fillet knife: 1,600. After the Kimbo: 145.

Measured on a certified sharpness tester, out on the boat. Lower is sharper: a new razor blade scores about 100.

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Fisherman on his boat with the fillet knife before the test
Before1,600→After145
Australian ownedShips from Sydney90-day money-backFree shipping

Does it really work? Here's the test.

A fillet knife, out on the boat. Five steps, one number.

  1. Blunt1

    Blunt

    Won't get through 25 mm jute rope.

  2. Measured: 1,6002

    Measured: 1,600

    The chart says "edge broken or torn, requires a professional regrind".

  3. Sharpened with the Kimbo3

    Sharpened with the Kimbo

    Magnetic block, diamond side, 10 passes. Flip. Ceramic side to finish. A few minutes.

  4. Measured again: 1454

    Measured again: 145

    Double-edge razor blade range.

  5. Cuts5

    Cuts

    Straight through the same rope.

What the number means

A sharpness tester measures the force needed to cut a test wire. Lower is sharper.

100Razor blade200300450Needs maintenance800Rolled edge1,600Broken or torn edgeSHARPBLUNTBEFORE1,600AFTER THE KIMBO145

Same knife, same tester. Broken edge. "Professional regrind." → Razor-blade range.

Why it works

The block locks the angle. You just roll.

Knife held on the magnetic angle block

Magnet holds the knife

The block sets the angle. Every pass hits the same spot, so you can't get it wrong.

Rolling the Kimbo along the blade

Diamond sharpens, ceramic polishes

About 10 passes a side. Flip the knife. Two minutes from blunt to scary sharp.

Kimbo Rolling Sharpener with block and gift box

You never replace the sharpener

Only the discs, and they click in. Diamond disc lasts 1,000+ knives.

4.9 stars, 3,468 reviews

Reckon I've gone through half a dozen dodgy sharpeners. Kimbo's the real deal. Few minutes and the blade's like new. Chef's knife, filleting blade, even the old camping one.

N.D, verified buyer

I've never had my knives this sharp, this fast. Incredibly easy to use.

R.J, verified buyer

Amazed at how easy it was to put some sharpness back on those blades. Have since thrown out all other knife sharpeners.

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Pick your Kimbo.

Kimbo Rolling Sharpener in three colours

Rolling Sharpener

The roller and the magnetic angle block. What the test above was done with.

$89.95 $299.90 Save $209.95

Pick a colour, straight to checkout:

Hard WoodGun Metal GreyBlack

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Kimbo Ultimate Set
Most popular

Ultimate Set

+ chef's knife, leather strop, display stand.

$149.95 $449.90

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Kimbo Pro Kit

Pro Kit

+ 1000 and 3000 grit discs, strop, cloth, stand.

$179.95 $539.90

See the kit
90DAY

Try it on every knife in the house.

Not scary sharp? Send it back within 90 days for a full refund. Australian owned, ships from Sydney, free tracked shipping.

Will it work on my knives?

Any straight-edge knife: chef's, santoku, paring, cleaver, fillet, hunting, pocket. Not serrated bread knives or scissors.

Which angle do I use?

20° for Western and supermarket knives, 15° for Japanese knives. The block also has 10° and 25°. Unsure? 20°.

How long does the diamond disc last?

1,000+ knives for a home kitchen. Replacement discs click in. The sharpener itself you never replace.

What's the guarantee?

90 days. Try it on every knife you own. Not happy, send it back for a full refund.

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