The Spyderco Delica 4 Thin Red Line C11FPSBKRD is the firefighter support Delica 4 — VG-10 Japanese stainless in a 2.875-inch full flat ground plain edge blade, Black FRN handle with Thin Red Line designation, and back lock, delivering the Delica 4's decades-refined compact carry performance in a build that carries the Thin Red Line's tribute to the fire service — the knife for firefighters, fire service supporters, and first responder community buyers who want their compact EDC to represent their connection to the fire service at $102.

The VG-10 blade is a Japanese stainless steel developed by Takefu Special Steel specifically for cutlery applications — a high-carbon, high-chromium stainless with cobalt addition that produces a well-balanced combination of edge retention, toughness, and corrosion resistance that significantly outperforms conventional budget stainless steels. VG-10 takes a fine polished edge on conventional sharpening stones and maintains it well through everyday carry use, sharpening more readily than high-vanadium PM steels and making the C11FPSBKRD the right compact EDC for buyers who want capable, maintainable stainless steel on conventional equipment. The full flat grind maximizes cutting efficiency by thinning behind the edge across the full blade width — the same geometry that makes every Delica 4 one of the best-cutting compact EDC folders at its price point. The Thin Red Line designation is the defining identity of the C11FPSBKRD — the Thin Red Line represents the fire service's role as the line between civilian safety and fire, carried across the first responder community as a symbol of respect for firefighters and fire service personnel. The Black FRN handle with Thin Red Line visual identity distinguishes the C11FPSBKRD from every standard Black FRN Delica 4 in the lineup while maintaining a subdued, professional carry character suited to first responder and fire service daily carry. At $102 the C11FPSBKRD commands just $2 more than the standard plain edge FRN Delica 4 variants — an essentially identical price point that makes the Thin Red Line Delica 4 the natural choice for firefighters and fire service supporters who carry the Delica 4 platform.

• Blade: VG-10 stainless, drop point profile, satin finish, plain edge, full flat grind — Japanese cutlery stainless with well-balanced edge retention, toughness, and corrosion resistance; full flat grind maximizes cutting efficiency; sharpens on conventional flat stones and guided systems
• Handle: Black FRN with Thin Red Line designation — chemically inert and lightweight compact Delica 4 profile; Thin Red Line identity distinguishes the C11FPSBKRD from standard Black FRN Delica 4 variants; carries the fire service tribute in the handle colorway
• Deployment / Lock: Back Lock via Spyderco Round Hole — back lock provides reliable blade security; ambidextrous Round Hole allows one-hand opening from any grip position
• Carry: Approximately 2.50 oz, tip-up right-hand wire clip, compact Delica 4 profile — Thin Red Line plain edge at $102; $2 more than standard plain edge FRN Delica 4 variants

Ideal For

Firefighters, fire service personnel, and Thin Red Line supporters who want to carry their Delica 4 EDC as a visible expression of fire service identity — the C11FPSBKRD at $102 delivers the Delica 4's full plain edge VG-10 performance in a Thin Red Line build that distinguishes itself from the standard Black FRN Delica 4 while maintaining the subdued professional character suited to fire service carry, at just $2 more than the standard plain edge FRN variants. First responder community buyers who carry the Delica 4 and want the Thin Red Line designation to represent their connection to the fire service — the C11FPSBKRD's Thin Red Line identity makes it the right compact EDC for buyers in the fire service community who want their everyday carry to reflect their professional identity without the bold visual statement of a colored handle. Buyers in the first responder knife community who want to pair the Thin Red Line Delica 4 alongside the Thin Blue Line Delica 4 for a complete first responder Delica 4 tribute pair — the Thin Red Line and Thin Blue Line Delica 4 configurations together represent the fire service and law enforcement communities in the compact Delica 4 back lock platform.

VG-10 Japanese stainless with well-balanced edge retention and easy conventional sharpening, a full flat grind that maximizes slicing efficiency across the 2.875-inch blade, Black FRN with Thin Red Line designation that carries the fire service tribute in every daily carry moment, and the back lock in Japan's most refined compact production folder — the Spyderco Delica 4 Thin Red Line C11FPSBKRD is the firefighter support compact Japanese EDC at $102. Add the Spyderco Delica 4 Thin Red Line C11FPSBKRD to your cart today and get same-or-next-business-day shipping from Columbia, Louisiana, backed by Spyderco's lifetime guarantee. Questions? Call 888-225-9775 — we carry these knives daily.