Extrema Ratio MF1 Folding Knife 3.43" Black Plain N690 Blade, Seat Belt Cutter, Black Aluminum Handles - EX133MF1BC


MSRP* : $406.95 | You Save* : $67.00 (16%)
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Part #: EX133MF1BC | Extrema Ratio Knives
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EX133MF1BC: MF1 Series Folder with Belt Cutter

Extrema Ratio

The Medium Folder MF series from Extrema Ratio are mid-sized offerings with all the strength of a fixed blade. They range in size from the MFO which is the smallest at 7.13" overall, to the MF3 which is a whopping 10.43" overall, depending on your particular needs. However, they all share the same basic design and features. All MF knives are built for tactical applications and come equipped with a rear glass breaker. They have a circular milled spot on the handle which makes it easier to change the grip position from saber to reverse grip. They have a reversible, deep carry pocket clip and the double screw pivot enables the opening regulation strength. The handle designs change slightly with the variations in size but all are very ergonomic and have multiple jimped areas for a sure grip. You will be ready for anything when you're carrying an MF folder from Extrema Ratio, they are built as strong as any folder on the market. This knife features the added bonus of a dedicated seat belt/strap cutter incorporated into the handle.


  • Blade Length: 3.43" (87 mm)
  • Blade Steel: Bohler N690 Stainless Steel, 58HRC
  • Thickness: 0.14" (3.5 mm)
  • Overall Length: 8.94" (227 mm)
  • Handle Material: Black Anodized Aluminum
  • Weight: 5.84 oz. (166 g)
  • Made in Italy

UPC Code: 000000155113

Pocket Clip
Pocket Clip Includes a pocket clip for easy accessibility and a more secure carry.
Aluminum Handles
Aluminum Handles A solid, lightweight material that can be molded, textured or anodized to provide better grip under extreme conditions.
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