--- product_id: 627268149 title: "Undercurrent Fishing Knife, MagnaCut Steel Blade (18040S) | Depth Blue Santoprene handle, Sheepsfoot blade" brand: "benchmade" price: "$465.41" currency: USD in_stock: true reviews_count: 7 category: "Benchmade" url: https://www.desertcart.us/products/627268149-undercurrent-fishing-knife-magnacut-steel-blade-18040s-depth-blue-santoprene store_origin: US region: United States of America --- # 4.3-inch CPM-MagnaCut sheepsfoot blade Lifetime free sharpening & maintenance Durable Santoprene handle for all-weather grip Undercurrent Fishing Knife, MagnaCut Steel Blade (18040S) | Depth Blue Santoprene handle, Sheepsfoot blade **Brand:** benchmade **Price:** $465.41 **Availability:** ✅ In Stock ## Summary > 🔪 Cut through the wild with precision and style — your lifetime adventure partner! ## Quick Answers - **What is this?** Undercurrent Fishing Knife, MagnaCut Steel Blade (18040S) | Depth Blue Santoprene handle, Sheepsfoot blade by benchmade - **How much does it cost?** $465.41 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/627268149-undercurrent-fishing-knife-magnacut-steel-blade-18040s-depth-blue-santoprene) ## Best For - benchmade enthusiasts ## Why This Product - Trusted benchmade brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-Weather Grip:** Santoprene handle combines vulcanized EPDM rubber and thermoplastic for a secure hold in wet or dry conditions. - • **Effortless Maintenance:** Sheepsfoot blade design ensures easy cleaning and safe handling, making it your go-to outdoor companion. - • **Precision Cutting Power:** CPM-MagnaCut steel blade with partial serrations slices through lines, ropes, and bait effortlessly. - • **Built to Last a Lifetime:** Benchmade’s LifeSharp service keeps your knife factory-sharp with free sharpening, cleaning, and adjustments. - • **Versatile Outdoor Essential:** Perfect for fishing, camping, hiking, and everyday carry with ambidextrous design and compact 9.43-inch length. ## Overview The Benchmade Undercurrent 18040S is a premium 4.3-inch sheepsfoot blade knife crafted from CPM-MagnaCut steel, featuring partial serrations for versatile cutting tasks. Its depth blue Santoprene handle ensures a secure grip in any weather, while the ambidextrous design suits all users. Backed by Benchmade’s lifetime free sharpening and maintenance service, this lightweight 5.38-ounce knife is an indispensable tool for fishing, camping, and outdoor enthusiasts seeking durability and precision. ## Description Everyday Carry Visit the Store Everyday Carry Visit the Store Outdoor Visit the Store Outdoor Cutlery Visit the Store Cutlery Water Visit the Store Water Tactical Visit the Store Tactical Review: Excellent - Bought as a gift for a friend who invited me up to Alaska to fish. Excellent knife on all counts…. Recipient was very pleased… Make somebody happy and buy them this knife… Review: What an awesome blade! Sheath sucks though - I love this thing! I've used it for everything from food prep to bushcraft and fishing. It holds an edge for a very long time and the handle is super comfortable. My only gripe is the sheath. For the price you pay, it should come with a belt loop or some way to carry it but it doesn't. Also, the little tab you have to press to unsheath the knife feels like it may break after a hundred uses or so. That being said, I still believe that this knife is worth a purchase ## Features - QUALITY: Sheepsfoot style blade made of CPM-MagnaCut steel with partial serrations for cutting lines, ropes, and bait, the Undercurrent is a cinch to clean. - COMFORT : A composite of vulcanized EPDM rubber and thermoplastic, this durable, molded material provides a sure grip in all conditions. - YOURS, FOR LIFE: Benchmade will re-sharpen your knife to a factory edge for free, for the life of the knife. Benchmade LifeSharp services includes cleaning, oiling, adjustments, and re-sharpening. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0D1RL6CJR | | Age Range (Description) | Adult | | Age Range Description | Adult | | Best Sellers Rank | #193,884 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #300 in Camping Fixed-Blade Knives | | Blade Edge | Sheepsfoot | | Blade Length | 4.3 Inches | | Blade Material | Stainless Steel | | Blade Shape | Sheepsfoot | | Blade Type | Sheepsfoot | | Brand | Benchmade | | Brand Name | Benchmade | | Color | Depth Blue | | Customer Reviews | 4.6 out of 5 stars 17 Reviews | | Hand Orientation | Ambidextrous | | Handle Material | Santoprene | | Included Components | Knife | | Is Product Cordless | Yes | | Item Length | 9.43 Inches | | Item Shape | Rectangular Prism | | Item Weight | 5.38 Ounces | | Manufacturer | Benchmade | | Model Name | Undercurrent | | Model Number | 18040S | | Part Number | 18040S | | Product Care Instructions | Hand Wash Only | | Recommended Uses For Product | Camping, Hiking | | Reusability | Reusable | | Special Feature | Benchmade Knife | | Special Features | Benchmade Knife | | Style | Undercurrent 18040S | | Theme | Outdoor Adventure | | UPC | 610953207946 | ## Product Details - **Age Range (Description):** Adult - **Blade Material:** Stainless Steel - **Brand:** Benchmade - **Color:** Depth Blue - **Handle Material:** Santoprene - **Included Components:** Knife - **Model Name:** Undercurrent - **Recommended Uses For Product:** Camping, Hiking - **Special Feature:** Benchmade Knife - **Style:** Undercurrent 18040S ## Images ![Undercurrent Fishing Knife, MagnaCut Steel Blade (18040S) | Depth Blue Santoprene handle, Sheepsfoot blade - Image 1](https://m.media-amazon.com/images/I/61hgXweA6ZL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent *by J***N on May 10, 2026* Bought as a gift for a friend who invited me up to Alaska to fish. Excellent knife on all counts…. Recipient was very pleased… Make somebody happy and buy them this knife… ### ⭐⭐⭐⭐ What an awesome blade! Sheath sucks though *by D***S on December 20, 2024* I love this thing! I've used it for everything from food prep to bushcraft and fishing. It holds an edge for a very long time and the handle is super comfortable. My only gripe is the sheath. For the price you pay, it should come with a belt loop or some way to carry it but it doesn't. Also, the little tab you have to press to unsheath the knife feels like it may break after a hundred uses or so. That being said, I still believe that this knife is worth a purchase ### ⭐⭐⭐⭐⭐ Very sharp *by A***R on March 21, 2026* Great knife ## Frequently Bought Together - Benchmade - Undercurrent 18040S Outdoor Knife with Depth Blue Santoprene Handle (18040S) - Benchmade - Fishcrafter 18010 Outdoor Knife with Depth Blue Santoprene Handle and 7" Trailing Point Blade (18010) - Benchmade - Adira 18060 Outdoor Knife with Depth Blue Grivory Handle (18060) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/627268149-undercurrent-fishing-knife-magnacut-steel-blade-18040s-depth-blue-santoprene](https://www.desertcart.us/products/627268149-undercurrent-fishing-knife-magnacut-steel-blade-18040s-depth-blue-santoprene) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-29*