Misen chef's knife with white handle and stainless steel blade

6" Bunka Knife (ACUTO440) - White

White
$99.00
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Misen chef's knife with white handle and stainless steel blade
  • Misen chef's knife with white handle and stainless steel blade
  • Misen chef's knife slicing a fresh tomato on a wooden cutting board
  • 6" Bunka Knife (ACUTO440) - White
  • Misen Santoku chef knife with white handle and stainless steel blade
  • Misen chef's knife blade close-up showing polished stainless steel and bolster
  • Misen chef's knife with blue handle on wooden cutting board with fresh parsley
  • Misen chef's knife with white handle and stainless steel blade
  • Misen chef's knife slicing a fresh tomato on a wooden cutting board
  • 6" Bunka Knife (ACUTO440) - White
  • Misen Santoku chef knife with white handle and stainless steel blade
  • Misen chef's knife blade close-up showing polished stainless steel and bolster
  • Misen chef's knife with blue handle on wooden cutting board with fresh parsley
6" Bunka Knife (ACUTO440) - White

33 Reviews

6" Bunka Knife (ACUTO440) - White

6-Inch White ACUTO440 Bunka Knife

$99.00

A Japanese-style chef’s knife with a paring tip. Compact, versatile, and built for everyday prep with extra precision.

Color: White
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60-Day Test Drive

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Lifetime Warranty Against Defects

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Free Returns

Features
  • AICHI ACUTO440 Japanese steel for exceptional sharpness and edge retention
  • Lab-tested rust resistance proven to withstand 50 days submerged in water and up to 100 dishwasher cycles.
  • 6” straight-belly blade for compact, versatile prep and clean, controlled cuts
  • Triangle tip for precise tasks like mincing and trimming
  • Ergonomic rounded spine and bolster for a more comfortable pinch grip
Rust-proof feature icon with spark symbols

Rust-Proof

3D box or cube geometry icon representing steel type or material structure

ACUTO440 Steel

Up and down chopping motion technique icon

Up & Down Chop
Use & Care
  • Hand wash
  • Dry immediately after use
  • Sharpen every 4–6 months
  • Heads up: High-carbon knives may show discoloration after exposure to acidic foods and/or salt. This is purely cosmetic and different from rust, which is extremely rare. 
  • Visit our Help Hub for more on how to use and care for this knife.

Let Us Handle the Sharpening
Specifications

Blade Length: 5.9 in. / 152 mm
Total Length: 11.52 in. / 293 mm
Handle Thickness: 18 mm
Weight: 0.43 lb / 194 g
Steel: AICHI ACUTO 440 (Japan)
HRC: 58±2
Grind & Edge: 50/50 Symmetrical, 14° per side
Handle Material: Polyoxymethylene
Country of Production: PRC
Warranty

All Misen products come with a lifetime warranty against defects. Misen will replace any defective products. Learn more about our warranty policy here and what's covered.

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Why It’s Great

The Triangle Tip Does More Than Look Cool

The pointed tip is built for precision work like mincing, trimming, and drawing cuts.

Let’s Talk About That Belly

The straight-belly blade excels at those up-and-down cuts you’ll want for slicing and chopping vegetables.

The Spine and Bolster Make It Easy

Rounded and ergonomic, they reduce pinch-grip finger pressure so you’ll stay comfy over long prep sessions.

Basically a Navy Seal

Rust-proof after 100 dishwasher cycles.

Because it’s got more chromium than standard high-carbon stainless, ACUTO440's rust resistance is a lab result, not a marketing claim.
Sliced salami and mozzarella sheet pan pizza on parchment paper being cut with a Misen chef's knife
Misen bread knife slicing dark sourdough loaf on wooden cutting board

Works Harder, Stays Sharper

Holds a razor edge through heavy prep.

At 58±2 HRC, ACUTO440 has incredible edge retention without brittleness. That means you can put off sharpening it for longer.

Questions?

What are Misen’s ACUTO440 Knives made of?

Our ACUTO440 Knives are made with AICHI ACUTO440, an exceptionally corrosion-resistant Japanese high-carbon stainless steel. AICHI ACUTO440 is rust-proof, incredibly durable, and has excellent edge retention. What that means for you: less time cleaning and sharpening, more cooking.
What’s the difference between Misen’s ACUTO440 Knives and classic knives?

All of our knives are made from high-carbon stainless steel, which is what gives them their razor-sharpness and excellent edge retention. However, our ACUTO440 Knives have a much higher chromium content (about 18%), which makes them significantly more corrosion (aka rust) resistant.

Our ACUTO440 Knives also feature a rounded spine and heel (the back of the knife where the blade meets the bolster), creating a more comfortable grip over long prep sessions.
How are Misen’s ACUTO440 Knives different from other high-carbon knives?

We wanted our ACUTO440 Knives to be high-performance tools that you could still leave in the sink overnight if you needed to. That’s why our ACUTO440 Knives are made with AICHI ACUTO440, a Japanese high-carbon stainless steel that is more durable and easier to care for than other high-carbon knives, which are prone to rusting and/or chipping without proper care.
What do you mean by rust-proof?

Our ACUTO440 Knives are made with AICHI ACUTO440 steel, an exceptionally corrosion-resistant Japanese high-carbon stainless steel. Our knives have been lab-certified to withstand up to 100 dishwasher cycles, as well as 50 days of being submerged in water, without showing any signs of rust.
Can I put Misen’s ACUTO440 Knives in the dishwasher?

While our ACUTO440 Knives have been lab-certified to withstand up to 100 dishwasher cycles without showing any signs of rust, we generally recommend hand washing all of your Misen knives. Because our knives are extremely sharp, when they get jostled around in the dishwasher, the blade can cut through the soft materials that make up your dishwasher racks. Dishwashing can also damage your knives if the blade edge bangs against hard objects like flatware or pots and pans during the washing cycle.
How often should I sharpen my knives?

Whenever you start to notice your knife is slicing and dicing a little less crisply than usual, it’s time to sharpen. Although our ACUTO440 Knives can go long periods between sharpenings, we generally recommend getting them sharpened about twice a year for best performance. We also recommend regularly using a honing rod between sharpenings to keep your knife edge in good shape.
My blade has discoloration and/or staining. What is this?

While our ACUTO440 Knives are rust-proof, all high-carbon knives can experience some discoloration and/or staining with prolonged exposure to acidic foods and/or salt. This is purely cosmetic and is not the same as rust.

Customer Reviews

5.0
Rated 5.0 out of 5 stars
Based on 33 reviews
Reviews Summary
Customers say this knife is exceptionally sharp out of the box and offers excellent control for various kitchen tasks. The compact 6-inch blade size appeals to those finding standard chef's knives too large, while the distinctive triangular tip proves useful for detailed work like deveining and slicing. Users praise the lightweight yet well-balanced design, noting it feels comfortable in hand during extended use. Many reviews highlight the blade's edge retention and low maintenance needs. The versatile shape handles everything from vegetable chopping to meat preparation. Several customers mention it has become their primary go-to knife, replacing larger alternatives in their regular rotation.
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33 reviews
  • Julieta G.
    Verified Buyer
    Reviewing
    6" Bunka Knife (ACUTO440) - Black
    I recommend this product
    Rated 5 out of 5 stars
    4 minutes ago
    Favorite knife

    This knife is perfect for all your meal prep veggies!!!

    It’s just a all around versatile knife.

    Was this helpful?
  • Jim J.
    Verified Buyer
    Reviewing
    6" Bunka Knife (ACUTO440) - Blue
    I recommend this product
    Rated 5 out of 5 stars
    1 week ago
    Love the Misen knives

    I have purchased a complete set in black many years ago. Then I decided to buy more with the blue handles. The 6 inch Bunka knife is a favorite and go to for chopping. Overall I love Misen knives, pots and pans, waiting for the new microwavable storage containers, on order, and also other accessories from Misen. The quality and workmanship is above and beyond the other upscale knives. I will continue to purchase Misen products!

    Was this helpful?
  • Linda S.
    Verified Buyer
    Reviewing
    6" Bunka Knife (ACUTO440) - Blue
    I recommend this product
    Rated 5 out of 5 stars
    3 weeks ago
    A revelation

    I've been using serrated all-purpose knives for most cooking. This gives more control and speed.

    Was this helpful?
  • Mike
    Reviewing
    6" Bunka Knife (ACUTO440) - Blue
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    Sharpest knife I’ve ever owned!

    I had a different Misen knife for years and it is my go to knife at home but needed a new knife for my camper. First thing I used it on was a watermelon and it just went through it like it was butter. It feels great in your hand and I know it will last for a very long time.

    Was this helpful?
  • pat O.
    Reviewing
    6" Bunka Knife (ACUTO440) - Blue
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    Bunka

    Somewhat odd looking to my eye. but when added to my set, I noticed it was the first knife used by the rest of the family. Very easy to use, Misen sharp and efficient.

    Try the bunka !!

    Doubt you send it back. It will become one of your favorites

    Was this helpful?
Show More

6-Inch White ACUTO440 Bunka Knife

Misen’s 6" Bunka Knife (ACUTO440) is a compact Japanese-style chef’s knife with a paring-style tip, built for everyday prep when you want extra precision in a smaller, easy-to-control size. The White, Blue, Black, and Red versions are the same knife with the same ACUTO440 steel and geometry, so your choice mainly comes down to the color you want on your board.

What makes this 6-inch bunka feel precise is the combination of a compact profile and a 6" straight-belly blade (5.9 in. / 152 mm blade length) that stays controlled through up-and-down chopping. It’s a versatile daily-prep shape when you want one knife to handle a lot of kitchen tasks without the footprint of a longer chef’s knife. If you are comparing shapes across the lineup, you can browse other individual options in Single Knives or see the full range of kitchen knives.

The standout bunka detail is the triangle tip, designed for precise work like mincing and trimming. That pointed, paring-style tip helps when you need to get into tighter spots on an onion, tidy up produce, or make controlled, clean starts on a cut. Paired with the compact blade length, it’s a practical choice for small-to-medium cutting boards, quick weeknight prep, and cooks who prefer a nimble knife that feels easy to guide.

Material-wise, the blade uses AICHI ACUTO440 Japanese steel, chosen for sharpness and edge retention. It is also lab-tested for rust resistance, proven to withstand 50 days submerged in water and up to 100 dishwasher cycles. For edge feel, the knife is ground 50/50 symmetrical at 14° with an HRC of 58±2, a balanced setup for everyday home cooking. Comfort is addressed with an ergonomic rounded spine and bolster that supports a more comfortable pinch grip.

For best results, follow Misen’s use and care guidance: hand wash, dry immediately after use, and sharpen about every 4 to 6 months. High-carbon knives can show discoloration after exposure to acidic foods and or salt, which Misen notes is cosmetic and different from rust (which is extremely rare). For deeper tips specific to this steel, Misen’s ACUTO knives care page is a helpful reference. The knife is also backed by a 60-day test drive, free returns, and a lifetime warranty against defects.

Frequently Asked Questions About 6-inch bunka knives

What is a bunka knife used for?

This bunka is designed as a Japanese-style chef’s knife with a paring-style tip, so it’s meant to cover everyday prep in a compact format. The straight-belly blade supports clean, controlled cuts, while the triangle tip helps with precise tasks like mincing and trimming.

Is the 6" Bunka Knife dishwasher safe?

Misen lab-tested the ACUTO440 blade for rust resistance, including performance through up to 100 dishwasher cycles. However, their recommended care is to hand wash and dry immediately after use, which is the best practice for maintaining the knife’s edge and overall condition.

How often should I sharpen this knife?

Misen recommends sharpening every 4 to 6 months for typical home use. How often you need to sharpen can vary with how frequently you cook and what you cut, but keeping to that schedule helps maintain the precise, controlled cutting this bunka is designed for.

What if I notice discoloration on the blade?

Misen notes that high-carbon knives may show discoloration after exposure to acidic foods and or salt. They describe this as purely cosmetic and different from rust. The knife’s steel is also lab-tested for rust resistance, with rust described as extremely rare.

What is the grind and edge style on this bunka?

This knife uses a 50/50 symmetrical grind and a 14° edge. That balanced geometry is designed for controlled, everyday cutting, and it pairs well with the bunka’s compact blade length and precision-focused triangle tip for detailed prep work.