The North Mountain Blade CHOP 4 (2412-RDWH) is a flagship front flipper folding knife, celebrated for helping spark the front flipper trend in Asia — with over 50,000 units sold. It combines traditional Japanese metallurgy with modern minimalist design, resulting in a folding knife that’s both elegant and highly functional.
At its core is a 3.5" Japanese-style tanto blade made from premium SLD-Magic Japanese steel in a three-layer San Mai construction, highlighted by a visible hamon wave pattern. With a hardness of 60–61 HRC, this blade offers outstanding edge retention, strength, and cutting performance for both precision work and everyday carry.
The Red & White Ceramic Carbon Fiber handle sets this variant apart visually, blending vibrant aesthetics with the lightweight durability ceramic carbon fiber is known for. Paired with a front flipper mechanism and ceramic ball bearings, it delivers a snappy, smooth opening that’s both satisfying and practical.
Every detail of the 2412-RDWH reflects a clean, purpose-driven design philosophy, making it a signature piece in the CHOP series.
Key Features
3.5" Japanese-style tanto blade in SLD San Mai steel with visible hamon
Front flipper mechanism with ceramic bearings for smooth, fast deployment
Distinctive Red & White Ceramic Carbon Fiber handle — strong, lightweight, and striking
60–61 HRC hardness for exceptional edge retention and durability
Minimalist, highly functional design that emphasizes craftsmanship
Part of the iconic CHOP 4 flagship line with 50,000+ units sold globally
Specifications
Feature
Details
Brand
North Mountain Blade
Model Name
CHOP 4
Model Number
2412-RDWH
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
Hardness
60–61 HRC
Handle Material
Red & White 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
3.5" SLD San Mai tanto blade with traditional Japanese forging
Front flipper deployment for fast, smooth, one-handed operation
Eye-catching Red & White Ceramic Carbon Fiber handles
Exceptional edge retention (60–61 HRC) and balanced cutting geometry
Clean, minimalist profile — no unnecessary ornamentation
Legendary CHOP 4 series with over 50,000 units sold
Ideal for collectors, enthusiasts, and refined EDC setups
