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Home > Benchmade > BM 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
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  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK

BM 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK

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BM8551BK: 8551BK Mediator AUTO

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  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Benchmade 8551 Mediator AUTO Folding Knife 3.26" S90V Black Plain Blade, G10 Handles - 8551BK
  • Description

Overall Length: 196 mm (7.71 inches)

Blade length: 83 mm (3.26 inches)

Blade thickness: 3.0 mm

Handle material: G10

Hardness: 58-60 HRC

Blade material: S90V

Packing: boxed

Net weight: 77 grams

Blade Angle:60°




Premium Steel Blade & Automatic Deployment Mechanism
The BM 8551 Mediator AUTO Folding Knife is outfitted with a 3.26″ blade crafted from CPM S90V steel — a premium powder-metallurgy stainless alloy recognized for exceptional edge retention, strong corrosion resistance and structural durability under sustained use. The blade is finished in a black coating for non-reflective carry and enhanced surface protection, and features a plain-edge profile to deliver smooth, efficient slicing and simplified maintenance. Coupled with the automatic deployment mechanism, this folder enables one-hand rapid access at the push of a button — giving the user swift readiness without sacrificing build quality or blade performance. Whether cutting webbing, trimming materials or handling utility tasks on the move, the design stands ready.
G10 Handle Construction & Refined Mechanics
The handle scales of the Mediator AUTO are crafted from G10—a fiberglass-reinforced epoxy laminate praised for durability, moisture and impact resistance, and reliable grip in varied environments. The handle design includes textured form, ergonomic contours and robust hardware to support deployment, carry comfort and sustained use. Behind the scenes, the automatic mechanism is engineered with precision hardware, consistent action, secure lock-up and long-term reliability—ensuring that this folder doesn’t feel like a simple carry piece but a serious tool crafted for performance.
Compact Automatic Folder for Carry & Utility
Although equipped with automatic deployment and built with premium materials, the Mediator AUTO remains practical in size—its 3.26″ blade length strikes a balance between carry convenience and cutting capability. The folding design allows safe, compact carry while the automatic action gives rapid readiness when used. Whether clipped in a pocket, carried in a kit or used on the go, the combination of S90V steel, G10 handles and auto mechanism makes this folder versatile: suitable for daily carry, gear support or tactical-minded utility. The build quality ensures that this isn’t just a “premium look” piece—it’s ready for real use.


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Product Advantages

• Elite S90V Steel for Superior Edge Retention and Durability
Choosing CPM S90V steel for the blade brings meaningful advantages: high wear resistance, excellent ability to hold a sharp edge under frequent use or abrasive materials, and remarkable overall structural durability. For everyday carriers or tactical users who rely on their tools, this means fewer sharpening sessions, longer performance life and greater confidence in the knife’s resilience and readiness.

• Auto Deployment Mechanism for Instant Access & Efficiency
The automatic deployment mechanism provides one-hand rapid blade deployment — a clear advantage when speed and access matter. Instead of manual opening, the Mediator AUTO lets you engage the blade instantly, which is critical in utility or readiness contexts. The mechanism is built with high-quality internals, smooth action and secure lock-up, ensuring the folder performs like a dedicated tool, not a toy.

• G10 Handle Material for Rugged Grip, Comfort & Carry Durability
The G10 handle scales are tough, reliable and well-suited for sustained carry and use. G10 is moisture-resistant, impact-resistant and provides excellent grip under varied conditions—wet, cold, dirty or gloved. Combined with ergonomic design and quality hardware, the handle supports comfortable everyday carry while sustaining the rigorous demands of use rather than casual display.

• Compact Size Without Compromising Materials or Mechanism
At 3.26″ blade length, the Mediator AUTO keeps carry size manageable while retaining premium materials and automatic deployment. Many compact folders compromise on steel, handle quality or mechanism; this folder does not. You get S90V steel, auto action, G10 handles and practical size—all in one package. This means you don’t trade performance for portability—you get both.



Usage Scenarios

• Everyday Carry (EDC) for Utility & Readiness
For users who carry daily and expect more than minimal functionality, the BM 8551 Mediator AUTO fits the role. Whether opening packages, trimming straps, adjusting gear, prepping cords or performing incidental tasks, the 3.26″ S90V blade provides high-end capability, and the automatic mechanism offers swift access. The compact size and G10 handle combine for comfortable clip or pocket carry without sacrificing readiness or build quality.

• Tactical or Professional Carry for Quick Deployment Requirements
In security, response, gear-carrier or tactical environments where rapid access and dependable build matter, this automatic folder shines. The one-hand deployment gives a readiness edge; the S90V steel blade handles serious cutting; the G10 handle ensures reliability; and the compact footprint means it can be carried on duty belts, gear rigs or pockets. When seconds matter and durability counts, this knife delivers.

• Travel & Urban Utility Tool for Mobile Use
During commuting, travel or high-mobility environments, carry weight and ease matter. The Mediator AUTO’s compact size and premium materials allow it to be tucked into bags, pockets or clipped discreetly, while the automatic deployment and durable blade support utility tasks like cutting webbing, adjusting gear, trimming materials on the move, or handling unexpected situations. The carry experience is refined yet practical, and the build stands up to frequent use.

• Gear Kit, Backup Carry & Preparedness Rotation
Whether you already carry a primary tool or maintain a backup kit, this automatic folder makes an excellent choice. Its manageable size allows placement in vehicle compartments, glove boxes, side pockets, or rotation slots. The materials and mechanism mean you’re not compromising quality for space. When your primary tool isn’t accessible and you need performance, the Mediator AUTO steps in with automatic readiness, premium build and reliable carry.

About Us

At KY-KNIVES, we are dedicated to providing high-performance tools for professionals and enthusiasts alike. Our commitment to quality and innovation is embodied in the MT Customs Marfione Halo V OTF AUTO Knife, a product that stands as a testament to precision and power. With a 4.17-inch Black ELmax Tanto Blade, known for its superior edge retention and corrosion resistance, this knife is designed for those who demand the best. Our aluminum alloy handles offer a lightweight yet sturdy grip, ensuring comfort and control during prolonged use. We pride ourselves on delivering products that not only perform but also enhance the user's experience. Our range of Microtech knives, including the versatile Troodon series, showcases our dedication to adaptability and excellence. Whether you're in the field or at home, KY-KNIVES ensures you have the tools you need to meet any challenge with confidence. Join us in our mission to provide reliable and innovative solutions that cater to your diverse needs.

Contact KY-KNIVES today to upgrade your tactical gear with the MT Customs Marfione Halo V OTF AUTO Knife. Let’s enhance your precision and reliability!



FAQ

Who are we?
We are a trusted provider of high-performance knives, specializing in the MT Customs Marfione Halo V OTF AUTO Knife. Our focus is on delivering precision tools that meet the needs of professionals and enthusiasts alike.

How can we guarantee quality?
We guarantee quality by using premium materials like the Black ELmax Tanto Blade, known for its edge retention and corrosion resistance. Our knives undergo rigorous testing to ensure they meet the highest standards of performance and durability.

What can you buy from us?
You can purchase a range of high-quality knives, including the MT Customs Marfione Halo V, which features a 4.17-inch Black ELmax Tanto Blade and durable aluminum alloy handles. Our selection caters to both tactical and everyday use.

Why should you buy from us not from other suppliers?
Our commitment to quality and innovation sets us apart. We offer knives that combine precision, reliability, and comfort, ensuring you have a tool that performs exceptionally in any situation. Our products are designed to provide long-term value and satisfaction.

What services can we provide?
We provide expert guidance to help you choose the right knife for your needs, along with reliable customer support. Our services include secure online purchasing and prompt delivery to ensure a seamless buying experience.

What’s your return or warranty policy?
We offer a comprehensive return and warranty policy to ensure your satisfaction with our products. If you encounter any issues, our customer service team is ready to assist you with returns or exchanges.

How fast can I receive my order?
We strive to process and ship orders quickly, ensuring you receive your MT Customs Marfione Halo V knife in a timely manner. Delivery times may vary based on your location, but we prioritize efficiency to meet your needs.

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