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Steakhouse Cuts. No Sawing.

Cosari PrimeCut 4

Serrated knives tear steak and push the juice onto your plate.

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  • 15° Micro-Honed Non-Serrated Edge
  • Full-Tang 1.4116 German Steel
  • Waterproof Triple-Riveted Ebony Handles
  • 118 g Forged Bolster Balance
Cosari PrimeCut 4
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Built Like the Knives at Your Favorite Steakhouse

Four details that separate a real steak knife from the ones that came free in your knife block.

15° Non-Serrated Edge

A smooth, hand-finished 15° per side bevel slices through crust and meat in one pull without fraying fibers or squeezing out juice.

Full Tang, Tip to Butt

A continuous 2.5 mm steel spine runs through the whole handle, locked in by three stainless rivets. No hidden rat-tail, no loose handles.

German X50CrMoV15 Steel

1.4116 high-carbon stainless at 56–58 HRC. Hard enough to hold an edge, tough enough not to chip on dinner plates.

Waterproof Ebony Handles

Resin-stabilized ebony Pakkawood sits flush against the tang. Nothing for water to seep into, nothing to swell or split.

How the PrimeCut 4 Cuts Cleaner

One Pull, No Sawing

One Pull, No Sawing

The smooth edge bites through char and parts a thick steak in a single draw. The upswept tip keeps most of the edge off the plate, so it stays sharp longer.

Solid Steel Through the Handle

Solid Steel Through the Handle

Look down the spine and you'll see steel from end to end, sandwiched flush between ebony scales. That's where the weight and balance come from.

Sharp Again in 10 Seconds

Sharp Again in 10 Seconds

Three light passes on any honing rod restore the edge. A serrated knife can't be touched up this easily at home.

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Excellent4.8 (247)Trustpilot

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Cosari PrimeCut 4

4-Piece Full-Tang German Steel Straight-Edge Steak Knife Set with Riveted Ebony Handles

Backed by our 30-Day Money-Back Trial & Full 2-Year Cosari Warranty.

$39.99 $79.99 Free Tracked Shipping Included

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30-Day Money-Back Guarantee plus a full 2-Year Warranty.

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Description

Why straight-edge?: Serrated teeth tear muscle fibers and press juice out of the meat. A fine straight edge slices cleanly, so steak stays juicy and chews more tenderly. It's why steakhouses use them.

What's it made of?: German 1.4116 (X50CrMoV15) stainless steel with about 0.50% carbon and 15% chromium, hardened to 56–58 HRC. Handles are resin-stabilized ebony Pakkawood with three stainless steel rivets.

How do I care for it?: Hand-wash with warm soapy water, towel-dry, and store in the included tray. Give each blade three passes on a honing rod every month or two.

Shipping & 30-Day Returns

Free Shipping: Every order ships free with full tracking within 24 hours.

30-Day Trial: Try it at home for 30 days risk-free. Need help? Email us anytime at support@buycosari.com.

2-Year Warranty: If anything goes wrong within 2 years, we replace it free of charge or refund your order in full.

Why Choose the Cosari PrimeCut 4?

Cosari PrimeCut 4 Detail

Balanced at the Bolster

At 118 g with the balance right at the forged bolster, each knife sits naturally in your hand and does the work for you.

Plate-Friendly Tip

The gently upswept tip touches the plate at one small point, while the rest of the edge stays in the meat and stays sharp.

30-Day Steak Night Trial

Cook your favorite cut, put these on the table, and judge for yourself. If you're not happy, send them back within 30 days.

Cosari PrimeCut 4 vs. Ordinary Alternatives

Cosari PrimeCut 4Standard Competitors

FeatureCosari PrimeCut 4Standard Competitors
Cutting a crusty ribeyeOne clean pull, glossy sliceBack-and-forth sawing, frayed edges
Juice left on the plate3.4x less in our testVisible red puddle
Sharpening at home3 passes on a honing rodDifficult; usually replaced
Handle constructionFull tang, 3 stainless rivets, flush ebonyHollow or plastic, can crack or loosen
Sound on stonewareQuiet glideScreeching teeth
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What's Included

In the Box
  • 1 × Set of 4 Cosari PrimeCut 4 straight-edge steak knives
  • 1 × Fitted 4-slot presentation storage box
  • 1 × Set of 4 protective blade tip guards
  • 1 × Care & honing guide card
Technical Specifications
  • Blade Steel: German 1.4116 / X50CrMoV15 high-carbon stainless
  • Hardness: 56–58 HRC
  • Edge: Non-serrated, micro-honed 15° per side (30° inclusive)
  • Blade Length: 4.75 in (120 mm)
  • Overall Length: 9.25 in
  • Spine Thickness: 2.5 mm full tang
  • Weight: 118 g per knife
  • Handle: Stabilized ebony Pakkawood, 3 stainless steel rivets
Care & Safety
  • Hand-wash with warm soapy water and towel-dry right away. Avoid the dishwasher, which dulls fine edges and stresses handles over time.
  • Give each blade three light passes on a honing rod every month or two, and store the knives in the fitted tray or with tip guards on to protect the edges.
  • Backed by our 30-Day Money-Back Guarantee & 2-Year Warranty
  • Customer Support: support@buycosari.com
In the Box Cosari PrimeCut 4

From Box to Dinner in Three Steps

Swipe left for steps 2 and 3

  1. Set the Table
    1

    Set the Table

    Lift the knives out of the fitted tray and set one beside each plate. No setup, no sharpening needed.

  2. Slice in One Pull
    2

    Slice in One Pull

    Steady the steak with your fork and draw the blade back once. The smooth edge parts the crust and the meat cleanly.

  3. Rinse, Dry, Store
    3

    Rinse, Dry, Store

    A 15-second rinse and towel-dry, then back into the tray until next steak night.

Verified Customer Reviews

What 200+ Verified Buyers Say About the Cosari PrimeCut 4

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Based on 247 verified reviews
5 Stars
212
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97% of buyers recommend the Cosari PrimeCut 4
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✓ Verified Purchase
Marcus T. — Austin, TX4 days ago

Stop sawing your steaks with serrated knives!!

Used our old wedding-registry serrated knives for ten years thinking that's just how steak knives worked. Once I switched to this heavy non-serrated fine-edge blade, I realized half the chewiness I blamed on the meat was actually my old block knives shredding the grain. First pull through a crusty NY strip felt like slicing chilled Kerrygold butter with zero juice puddle on the plate.

Verified Purchase · Austin, TX · Cosari PrimeCut 4

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David R. — Charlotte, NC1 week ago

Feels like a $250 set from Williams Sonoma

You run your finger over the spine and triple rivets and literally cannot feel a seam where the black wood meets the steel. My previous set had tiny gaps between the wood scales and tang that trapped water, but these ebony handles are completely flush and solid at over 4 ounces per knife. Immediately ordered a second 4-piece box so we have 8 matching knives for dinner parties.

Verified Purchase · Austin, TX · Cosari PrimeCut 4

✓ Verified Purchase
Greg H. — Denver, CO1 week ago

Tested side-by-side against $340 Wüsthof Classics

Bought one 4-pack at 50% off to test against my brother-in-law's $340 Wüsthof Classics at Sunday ribeye dinner. Nobody at the table could tell which knife cost $85 a piece and which one cost $10. The heavy bolster balance sits right in the crook of your index finger.

Verified Purchase · Austin, TX · Cosari PrimeCut 4

✓ Verified Purchase
Elena M. — Scottsdale, AZ2 weeks ago

Upward tip curve protects the main cutting edge

I was terrified a smooth edge would dull instantly on ceramic dinner plates, but the upward curve at the tip means only the very point touches the plate while the belly glides through the meat. Clean mirror-like cuts straight through a thick ribeye cap without rocking the table or screeching on our stoneware.

Verified Purchase · Austin, TX · Cosari PrimeCut 4

✓ Verified Purchase
Brian K. — Naperville, IL2 weeks ago

Three swipes on a honing rod and they shave hair

Three quick swipes on my honing steel once a month and they shave arm hair again. Try doing that with a dull serrated knife—you literally just have to throw serrated ones in the trash once the teeth bend.

Verified Purchase · Austin, TX · Cosari PrimeCut 4

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Claire S. — Tampa, FL3 weeks ago

Zero rust after acidic marinades and sea salt

Hand washed and dried them 20+ times now after acidic chimichurri and flaky sea salt dinners—not a single speck of rust on the German stainless blades or rivets. Makes cheap stamped hollow-handle knives feel like airline plastic cutlery.

Verified Purchase · Austin, TX · Cosari PrimeCut 4

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Paul W. — Portland, OR3 weeks ago

Not just for beef—incredible on chicken and tomatoes

Even works effortlessly on crispy-skin roast chicken, thick heirloom tomatoes, and crusty sourdough at dinner without crushing the crumb or tearing the skin.

Verified Purchase · Austin, TX · Cosari PrimeCut 4

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Kevin L. — Columbus, OH1 month ago

Unreal quality for forty bucks, just remember to hand wash

The fit and finish on the full-tang spine and triple rivets is dead flush. Only giving a heads up that you do need to hand-wash and dry them right after dinner like any good chef's knife, which takes 30 seconds. Worth every penny.

Verified Purchase · Austin, TX · Cosari PrimeCut 4

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nathan b. — Nashville, TN1 month ago

No more shredded meat fibers on the plate

I Sous Vide our steaks and finish in cast iron, and it always drove me crazy watching guests saw at a tender filet with toothed knives. These glide straight through in one backward pull.

Verified Purchase · Austin, TX · Cosari PrimeCut 4

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Rachel V. — Omaha, NE1 month ago

Grabbed two boxes while the 50% off deal was live

Came razor sharp out of the box with little plastic tip protectors on each blade. Hefty, balanced right at the bolster, and looks sharp on the table.

Verified Purchase · Austin, TX · Cosari PrimeCut 4

Stop Sawing Good Steak. Get the PrimeCut 4 at 50% Off Today.

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Frequently Asked Questions

Won't cutting on ceramic plates ruin a non-serrated blade?

Plates will slowly wear any edge, serrated or not. The Cosari's upswept tip means only the point touches the plate on a normal stroke, and the 56–58 HRC German steel is tough enough to roll rather than chip. Three passes on a honing rod every month or two brings it right back.

Are the ebony handles real wood that can crack if wet?

They're stabilized ebony Pakkawood: wood layers bonded with resin under pressure. It's dense and non-porous, so it doesn't soak up water, swell, or split like untreated wood.

Is it truly full tang?

Yes. The 2.5 mm steel tang runs from the tip of the blade to the end of the handle, and you can see it along the spine between the handle scales and three stainless rivets.

Can I put them in the dishwasher?

We don't recommend it. Dishwasher detergent and drying heat dull fine edges over time. A quick rinse and towel-dry takes about 15 seconds per knife.

How do I sharpen them years from now?

Any standard honing steel, pull-through sharpener, or whetstone works. Hone at roughly 15 degrees per side. That's one of the main advantages over serrated knives, which are difficult to sharpen at home.

What if we usually host six or eight people?

Add a second 4-piece set at checkout for eight matching knives. The second set is the same $39.99 price, so eight knives come to $79.98.

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