FOLDABLE – POCKET READY Some designs go unnoticed. This one stands out immediately. The SATRE family identity goes pocket-sized. The SATRE F brings the signature toughness of Extrema Ratio into the compact folding knife segment. Lightweight to carry, impossible to ignore. Perfect in the pocket of high-end denim or an outdoor shirt: an icon of style and daily operational readiness.
LIGHTNING-FAST DEPLOYMENT. CHROMATIC IMPACT. SATRE F is a compact folder designed for everyday carry (EDC). The flipper system ensures immediate and instinctive blade deployment. The structure utilizes a double steel liner, offering surprising rigidity in a featherweight build, supported by a rock-solid Liner-Lock mechanism. The handle scale features a milled window that reveals the blade color when closed, boosting aesthetic impact, especially in the versions featuring black blades and high-visibility colors. The "Deep Carry" wire clip ensures total concealment.
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MAKE YOUR CHOICE
Six variants to define your style. The Böhler N690 steel models (Black and Stone Washed) offer the ultimate balance between edge retention and impact resistance, minimizing operational maintenance.
The Nitrogen steel versions (Periwinkle, Orange, and Yellow) ensure superior corrosion resistance and minimal maintenance, featuring a bold aesthetic that demands attention.
Completing the series is SATRE F OUTDOOR NITROGEN, dedicated to those seeking a tool born for the wilderness, the woods, and the field.
Every color choice represents a precise identity.
MAKE IT YOURS
SATRE F comes ready for use and needs nothing else to accompany you every day. For those who want to keep their tool at peak performance, Extrema Ratio offers portable sharpeners and survival kits. Different tools, same philosophy: reliable, essential, ready when needed.
Thirty years of uncompromising choices. Lifetime warranty. Direct support. Extrema Ratio does not forget you after your purchase.
SATRE F OUTDOOR NITROGEN
WILD – POCKET READY The Extrema Ratio OUTDOOR Series is designed for those who use knives continuously in the open air: woods, field, operational camping, and land management. We stripped away the non-essential. We kept everything that matters: reliability, quality, performance. Some tools stay in the backpack. You carry this one because you know it will be needed. It was born to be outside. Woods, field, terrain. SATRE F OUTDOOR NITROGEN takes the compact SATRE F platform and projects it into the Extrema Ratio Outdoor context. NITROGEN STEEL. ABSOLUTE EFFECTIVENESS. SATRE F OUTDOOR is a folding outdoor knife designed for heavy-duty field use. The Nitrogen steel Drop Point blade offers extreme corrosion resistance (ideal for prolonged outdoor use) and consistent edge retention, making it exceptionally easy to resharpen even without specialized equipment. The double steel liner structure guarantees absolute structural rigidity. The flipper deployment system and Liner-Lock mechanism ensure immediate operation and total safety during use. A configuration built with a precise logic for the natural environment. The clean design and material selection respond to a specific operational need: immediate effectiveness and maintenance reduced to a minimum. The satin-finished blade reduces signs of wear and field work, making this model the ideal tool for the outdoor professional. MAKE IT YOURS SATRE F OUTDOOR is your essential partner for outdoor adventures. To build a customized setup, Extrema Ratio offers portable sharpeners, firesteels, and survival kits designed for intensive use. Different tools, same philosophy: reliable, essential, ready when needed. Thirty years of uncompromising choices. Lifetime warranty. Direct support. Extrema Ratio does not forget you after your purchase.