The North Mountain Blade CHOP 4 (2412-BLCF) represents the pinnacle of the brand’s folding knife design. As the flagship model that helped ignite the front flipper trend, the CHOP 4 has achieved legendary status in Asia — with over 50,000 units sold — and is now gaining traction among enthusiasts worldwide.
The star of the show is the 3.5" Japanese-style tanto blade, crafted from SLD-Magic Japanese steel in a striking three-layer San Mai construction. The visible hamon wave pattern is both beautiful and functional, highlighting the precise forging that results in exceptional edge retention (60–61 HRC) and cutting performance.
The Blue Ceramic Carbon Fiber handle is lightweight, rigid, and visually striking, perfectly complementing the clean, minimalist design language of the CHOP 4. Paired with a front flipper mechanism running on ceramic ball bearings, deployment is smooth, precise, and satisfying.
This knife embodies functional minimalism, merging Japanese metallurgy with modern craftsmanship. It’s a refined tool with a rugged edge—ideal for collectors and EDC enthusiasts alike.
Key Features
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3.5" SLD San Mai tanto blade with visible hamon wave pattern
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Front flipper mechanism with ceramic bearings for smooth deployment
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Distinctive Blue Ceramic Carbon Fiber handle for strength and visual appeal
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60–61 HRC blade hardness for excellent edge retention and durability
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Clean, functional design with no unnecessary embellishments
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Part of the legendary CHOP 4 series with 50,000+ units sold globally
Specifications
| Feature |
Details |
| Brand |
North Mountain Blade |
| Model Name |
CHOP 4 |
| Model Number |
2412-BLCF |
| Product Type |
Folding Knife |
| Opening Mechanism |
Front Flipper |
| Overall Length |
≈ 8.25 in |
| Blade Length |
3.5 in |
| Blade Material |
SLD-Magic San Mai Japanese Steel |
| Blade Style |
Japanese-Style Tanto |
| Blade Grind |
Flat |
| Blade Finish |
Belt Satin with Hamon |
| Blade Hardness |
60–61 HRC |
| Handle Material |
Blue Ceramic Carbon Fiber |
| Locking Mechanism |
Liner Lock |
| Pivot Assembly |
Ceramic Ball Bearings |
| Clip Position |
Tip-Up |
| Dexterity |
Ambidextrous |
| Designer |
North Mountain Blade Team |
| Country of Origin |
China |
| Intended Use |
EDC / Collection / Tactical |
Feature Highlights
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Premium SLD San Mai tanto blade (3.5") forged with traditional Japanese methods
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Front flipper action with ceramic bearings for clean, fast deployment
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Sleek blue ceramic carbon fiber handle — lightweight, strong, and eye-catching
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Exceptional edge retention at 60–61 HRC
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Iconic CHOP 4 series with 50,000+ units sold worldwide
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Ideal for collectors, enthusiasts, and refined everyday carry
