--- product_id: 357047812 title: "Pentagon FX Covert Professional Fixed Blade Knife for Tactical Needs | Double-Edge CYRO S35VN Full-Tang Steel Blade" brand: "sog" price: "€ 231.36" currency: EUR in_stock: true reviews_count: 8 category: "Sog" url: https://www.desertcart.pt/products/357047812-pentagon-fx-covert-professional-fixed-blade-knife-for-tactical-needs store_origin: PT region: Portugal --- # Full-tang steel for max strength G10 handle with textured grip 3.41" CRYO CPM S35VN blade Pentagon FX Covert Professional Fixed Blade Knife for Tactical Needs | Double-Edge CYRO S35VN Full-Tang Steel Blade **Brand:** sog **Price:** € 231.36 **Availability:** βœ… In Stock ## Summary > πŸ—‘οΈ Own the edge others only dream of – tactical precision in your pocket. ## Quick Answers - **What is this?** Pentagon FX Covert Professional Fixed Blade Knife for Tactical Needs | Double-Edge CYRO S35VN Full-Tang Steel Blade by sog - **How much does it cost?** € 231.36 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/357047812-pentagon-fx-covert-professional-fixed-blade-knife-for-tactical-needs) ## Best For - sog enthusiasts ## Why This Product - Trusted sog brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Ergonomic G10 Handle:** Textured, moisture-resistant grip designed for secure handling during extended use. - β€’ **Compact Tactical Power:** Discreet 7.52" full-tang fixed blade built for covert ops and everyday carry. - β€’ **Versatile Carry Options:** Low-profile GRN sheath with multiple mounting systems including belt, MOLLE, Velcro, and universal mounts. - β€’ **Premium CRYO CPM S35VN Steel:** American-made blade with superior toughness and wear resistance for mission-critical reliability. - β€’ **Precision Engineered Retention:** Sheath’s death grip retention ensures your blade stays locked in placeβ€”no slip, no fail. ## Overview The SOG Pentagon FX Covert is a compact, professional-grade fixed blade knife featuring a 3.41-inch double-edged CRYO CPM S35VN steel blade with full-tang construction for unmatched strength. Its ergonomic G10 handle offers a secure, moisture-resistant grip, while the minimalist GRN sheath supports versatile, discreet carry options including belt, MOLLE, and Velcro mounting. Designed for tactical professionals and enthusiasts who demand high performance in a covert package, this knife balances durability, concealability, and precision. ## Description SOG PENTAGON FX COVERT FIXED BLADE KNIFE Designed as an evolutionary step in concealed fixed blade knives, Pentagon FX Covert is ideal for discreet carry. It features a double-edge CYRO S35VN full-tang steel blade, removable G10 handles and a minimalist GRN sheath compatible with SOG's next-generation Universal Mounting System. The SOG Pentagon FX Covert is a streamlined, discreet tactical fixed blade designed for those who require high performance in a more compact package. It excels in covert operations, self-defense, and other situations where both functionality and concealability are key. FEATURES: - Overall Length: 7.52" - Blade Length: 3.41" - Blade Thickness: 0.18" - Weight: 3.9 oz - Blade Steel Type: CRYO CPM S35VN - Blade Shape: Spear Point - Edge Type: Straight - Handle Material: G10 - Hardness: Rc. 58-61 - Sheath Material: GRN - Mounting: Universal Mounting System Review: Impressive out of the box. - This is an excellent dagger and sheath design. I suspect this will be the swan song for SOG daggers, as long as GSM owns SOG. Fortunately, the Pentagon FX and FX Covert models were designed prior to GSM, and I'm glad I picked one up, since I missed out on the original Seki Pentagon's in SOG's heyday. The pentagon covert feels great in the hand with jimping in all the right places for a secure saber or icepick grip. The handle is small and not really intended for a hammer grip. The hilt is very minimal and slightly rounded, just enough to ramp your thumb against and hold your index finger secure, without being too wide or squared to catch on clothing or gear. Almost as smooth as a hiltless design. When held in a saber grip the jimping on the pommel also locks securely into the bone of your palm for thrusting motions. The same jimping on the pommel makes a secure backstop for your thumb in the ice pick grip. The sheath is equally well thought out with death grip retention and has several carry options; the pocket clip works well and holds securely to whatever you attach it to, the clip can also be removed and re-attached across the lashing holes near the hilt for scout style. You can also remove the clip for a slimmer sheath and use the lash holes with paracord to secure to your boot, ankle or use as a neck knife. You can even use Velcro tape on the smooth back of the sheath (clip removed) and attach directly to your plate carrier or any other gear with Velcro. One reviewer mentioned popping out the tabs on the inside of the sheath... DO NOT DO THIS. Those tabs pressure fit over the ends of the hilt and hold the dagger securely. Sheathing the dagger requires some force and produces an audible click when those tabs lock in place over the hilt. I suspect people are not doing this properly, hence the bad reviews regarding the sheath retention. I EDC the pentagon attached to the shoulder strap of my maxpedition sitka pack, pommel down, utilizing the stock UMS belt clip with no retention issues at all. Lastly, the only minor con that I can find is that the edges are not very sharp out of the box, as pointed out by other reviewers. The edge is serviceable and can be improved with honing, however, slicing tasks are not for dagger style blades. The design utilizes maximum tip strength for penetration tasks, and a little edge sharpness is sacrificed due to blade geometry. Out of the box, the point is sharp and well-formed for its intended use. Review: A good little back-up knife - Absolutely an awesome little fixed blade. Sheath holds well and the belt clip although a little thin in my opinion also works well. ## Features - PROFESSIONAL FIXED BLADE KNIFE - The SOG Pentagon FX Covert Fixed Blade Knife is a compact, tactical version of the original Pentagon FX, designed for users who need a smaller tool that retains high performance; it is ideal for discreet carry - FULL-TANG CONSTRUCTION - The full tang construction adds strength to this survival tactical knife; the ergonomic design allows for comfortable use during prolonged periods; the weight of the SOG Pentagon FX Covert Fixed Blade Knife is 3.9 oz - CRYO CPM S35VN STEEL - An American-made steel featuring vanadium and niobium carbides that provide high degrees of toughness and wear resistance; the Pentagon FX Covert features a 3.41-inch blade, which makes it compact and easy to conceal - G10 HANDLE - Textured for optimal grip, the G10 handles feature a single-fastener slip-on/slip-off design that allows you to customize your compact emergency to your mission's needs; G10 is known for its ruggedness & is resistant to both impact & moisture - COVERT BY DESIGN - Compact and low profile GRN sheath can discreetly integrate into your load-out, allowing for a variety of ways to carry; mount it on a belt, in between MOLLE, with adhesive Velcro or as part of SOG’s Universal Mounting System ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09C6PH5SP | | Age Range Description | Adult | | Best Sellers Rank | #168,751 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #296 in Tactical Knives | | Blade Edge | Compound Bevel | | Blade Length | 3.41 Inches | | Blade Material | CRYO CPM S35VN | | Blade Shape | Spear Point | | Brand Name | SOG | | Color | Blackout | | Customer Package Type | Basic | | Customer Reviews | 3.9 3.9 out of 5 stars (34) | | Hand Orientation | Ambidextrous | | Handle Material | Fiberglass | | Included Components | Product | | Is Product Cordless | Yes | | Item Length | 7.52 Inches | | Item Type Name | Holster | | Item Weight | 11.2 ounces | | Manufacturer | SOG Knives & Tools | | Model Name | SOG-17-61-03-57 | | Model Number | SOG-17-61-03-57 | | Power Source | hand_powered | | Product Care Instructions | Hand Wash Only | | Recommended Uses For Product | Camping, Hunting, Fishing, Self-Defense, Whittling, Skinning, Carving | | Reusability | Reusable | | Special Features | Foldable | | Style | Tactical-Modern | | Theme | Tactical | | UPC | 729857011525 | | Unit Count | 1.0 Count | | Warranty Description | 2 Year Manufacturer | ## Product Details - **Age Range (Description):** Adult - **Blade Material:** CRYO CPM S35VN - **Brand:** SOG - **Color:** Blackout - **Handle Material:** Fiberglass - **Included Components:** Product - **Model Name:** SOG-17-61-03-57 - **Recommended Uses For Product:** Camping, Hunting, Fishing, Self-Defense, Whittling, Skinning, Carving - **Special Feature:** Foldable - **Style:** Tactical-Modern ## Images ![Pentagon FX Covert Professional Fixed Blade Knife for Tactical Needs | Double-Edge CYRO S35VN Full-Tang Steel Blade - Image 1](https://m.media-amazon.com/images/I/51377K61bAL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Is this one made in Japan like the original pentagon?** A: Made in Taiwan **Q: Does anyone know if you can add a tech lock to the sheath to wear horizontal on belt** A: I don't think so. The screws/pins/bolts whatever that affix the clip to the sheath don't look like they can be undone. **Q: What is blade length of sog pentagon fx covert fixed blade? thx** A: About 3 1/4" ## Customer Reviews ### ⭐⭐⭐⭐⭐ Impressive out of the box. *by A***N on February 14, 2025* This is an excellent dagger and sheath design. I suspect this will be the swan song for SOG daggers, as long as GSM owns SOG. Fortunately, the Pentagon FX and FX Covert models were designed prior to GSM, and I'm glad I picked one up, since I missed out on the original Seki Pentagon's in SOG's heyday. The pentagon covert feels great in the hand with jimping in all the right places for a secure saber or icepick grip. The handle is small and not really intended for a hammer grip. The hilt is very minimal and slightly rounded, just enough to ramp your thumb against and hold your index finger secure, without being too wide or squared to catch on clothing or gear. Almost as smooth as a hiltless design. When held in a saber grip the jimping on the pommel also locks securely into the bone of your palm for thrusting motions. The same jimping on the pommel makes a secure backstop for your thumb in the ice pick grip. The sheath is equally well thought out with death grip retention and has several carry options; the pocket clip works well and holds securely to whatever you attach it to, the clip can also be removed and re-attached across the lashing holes near the hilt for scout style. You can also remove the clip for a slimmer sheath and use the lash holes with paracord to secure to your boot, ankle or use as a neck knife. You can even use Velcro tape on the smooth back of the sheath (clip removed) and attach directly to your plate carrier or any other gear with Velcro. One reviewer mentioned popping out the tabs on the inside of the sheath... DO NOT DO THIS. Those tabs pressure fit over the ends of the hilt and hold the dagger securely. Sheathing the dagger requires some force and produces an audible click when those tabs lock in place over the hilt. I suspect people are not doing this properly, hence the bad reviews regarding the sheath retention. I EDC the pentagon attached to the shoulder strap of my maxpedition sitka pack, pommel down, utilizing the stock UMS belt clip with no retention issues at all. Lastly, the only minor con that I can find is that the edges are not very sharp out of the box, as pointed out by other reviewers. The edge is serviceable and can be improved with honing, however, slicing tasks are not for dagger style blades. The design utilizes maximum tip strength for penetration tasks, and a little edge sharpness is sacrificed due to blade geometry. Out of the box, the point is sharp and well-formed for its intended use. ### ⭐⭐⭐⭐⭐ A good little back-up knife *by E***N on February 19, 2026* Absolutely an awesome little fixed blade. Sheath holds well and the belt clip although a little thin in my opinion also works well. ### ⭐⭐⭐ Sheath Sucks! *by C***K on January 6, 2026* The blade itself is amazing! Top notch from SOG.. however the sheath completely sucks! The blade will not stay securely fastened! Lot of tweaking and personal adjustments must be made ! ## Frequently Bought Together - SOG Pentagon FX Covert Professional Fixed Blade Knife for Tactical Needs | Double-Edge CYRO S35VN Full-Tang Steel Blade - SOG Flint 4.3" Survival & Defense Portable Compact Tool for Outdoors and Emergencies | Includes Glass Breaker and Whistle - SOG ParaShears Lightweight Backcountry Stainless Steel Multi-Tool, 11 Tools | Compound Leverage Technology, Black --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/357047812-pentagon-fx-covert-professional-fixed-blade-knife-for-tactical-needs](https://www.desertcart.pt/products/357047812-pentagon-fx-covert-professional-fixed-blade-knife-for-tactical-needs) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-24*